{
  "schemaVersion": 3,
  "revision": "88e0b4a850ca3fd8631b93d4d7fa8b72de96565f",
  "entities": [
    {
      "id": "apache-http-server",
      "schema_version": 2,
      "name": "Apache HTTP Server",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "protocol"
      ],
      "aliases": [
        "Apache",
        "Apache httpd"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "NCSA httpdを基に共同開発が始まったオープンソースのHTTPサーバー。",
      "canonical_source": "apache-http-server-history",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1995-04",
          "precision": "month",
          "sortKey": "1995-04-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nApache HTTP Server Projectの公式史は、NCSA httpd 1.3を共通基盤として作業を始め、\n1995年4月に最初の公開版Apache 0.6.2を出したと記録している。現在もPMCの下で\nsource repository、release、bug fixを含む開発が続いている。[^apache-http-server-history]\n"
    },
    {
      "id": "cern-httpd",
      "schema_version": 2,
      "name": "CERN httpd",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "protocol"
      ],
      "aliases": [
        "CERN HTTPD",
        "W3C httpd"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "CERNのWebプロジェクトで開発され、公開された初期のHTTPサーバー実装。",
      "canonical_source": "w3c-cern-httpd",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1990-10",
          "precision": "month",
          "sortKey": "1990-10-01"
        },
        "end": {
          "value": "1996-07-15",
          "precision": "day",
          "sortKey": "1996-07-15"
        }
      },
      "stewards": [],
      "body": "\nCERN httpdはHTTP serverとproxyとして利用できるserverで、Version 3.0Aが\n1996年7月15日に生成されたfinal versionである。W3Cは現在このserverを保守していない。\n[^w3c-cern-httpd]\n"
    },
    {
      "id": "html",
      "schema_version": 2,
      "name": "Hypertext Markup Language",
      "name_ja": "ハイパーテキスト・マークアップ言語",
      "kind": "specification",
      "topics": [
        "web-standard"
      ],
      "aliases": [
        "HTML"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "Web文書のsemantics、structure、syntaxとWeb application APIsを定義するLiving Standard。",
      "canonical_source": "whatwg-html-standard",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1990",
          "precision": "year",
          "sortKey": "1990-01-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nHTMLは1990年からWorld Wide Webで使われ、RFC 1866がHTML 2.0として初期の実装慣行を\n形式化した。現在はWHATWG HTML StandardがLiving Standardとして継続的に更新されている。\n[^rfc1866] [^whatwg-html-standard]\n"
    },
    {
      "id": "http-09",
      "schema_version": 2,
      "name": "HTTP/0.9",
      "name_ja": null,
      "kind": "specification",
      "topics": [
        "protocol",
        "web-standard"
      ],
      "aliases": [
        "HTTP 0.9",
        "Simple-Request HTTP"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "GETだけを使い、headerを持たないSimple-Request／Simple-Response形式の初期HTTP。",
      "canonical_source": "w3c-http-09-original",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1990",
          "precision": "year",
          "sortKey": "1990-01-01"
        },
        "end": null,
        "end_state": "unknown"
      },
      "stewards": [],
      "body": "\nW3Cが保存する1991年の定義は、prototypeで実装された初期HTTPをHTTP 0.9と呼び、GETに\nよる単純な取得を説明している。[^w3c-http-09-original] RFC 1945は後にSimple-Request／\nSimple-Responseとして形式化し、HTTP/1.0サーバーに後方互換を求めた。[^rfc1945]\n"
    },
    {
      "id": "http-10",
      "schema_version": 2,
      "name": "HTTP/1.0",
      "name_ja": null,
      "kind": "specification",
      "topics": [
        "protocol",
        "web-standard"
      ],
      "aliases": [
        "HTTP 1.0"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "要求・応答メタデータと多様なデータ形式を扱うHTTPをRFC 1945として記録した仕様。",
      "canonical_source": "rfc1945",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1996-05",
          "precision": "month",
          "sortKey": "1996-05-01"
        },
        "end": null,
        "end_state": "unknown"
      },
      "stewards": [],
      "body": "\nRFC 1945は当時広く使われていたHTTP/1.0の共通利用法を記録し、基本的な\n要求・応答形式を定義した。[^rfc1945]\n"
    },
    {
      "id": "http-11",
      "schema_version": 2,
      "name": "HTTP/1.1",
      "name_ja": null,
      "kind": "specification",
      "topics": [
        "protocol",
        "web-standard"
      ],
      "aliases": [
        "HTTP 1.1"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "HTTP/1.0の相互運用性と性能上の制約に対処したHTTPの改訂仕様。",
      "canonical_source": "rfc9112",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1997-01",
          "precision": "month",
          "sortKey": "1997-01-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nHTTP/1.1はRFC 2068でHTTP/1.0の更新として定義され、RFC 2616への改訂を経て、\n現在はRFC 9112がmessage syntax、parsing、connection managementをInternet Standardとして\n規定している。[^rfc2068] [^rfc2616] [^rfc9112]\n"
    },
    {
      "id": "http-2",
      "schema_version": 2,
      "name": "HTTP/2",
      "name_ja": null,
      "kind": "specification",
      "topics": [
        "protocol",
        "web-standard"
      ],
      "aliases": [
        "h2",
        "HTTP 2"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "多重化とヘッダー圧縮によってHTTPの転送効率と遅延を改善するメジャー改訂。",
      "canonical_source": "rfc9113",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "2015-05",
          "precision": "month",
          "sortKey": "2015-05-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nHTTP/2はRFC 7540で、HTTPの意味論を維持しながらfield compressionと単一接続上の\n複数の同時exchangeを導入する仕様として定義された。現在はRFC 9113がRFC 7540を\n置き換えている。[^rfc7540] [^rfc9113]\n"
    },
    {
      "id": "http-3",
      "schema_version": 2,
      "name": "HTTP/3",
      "name_ja": null,
      "kind": "specification",
      "topics": [
        "protocol",
        "web-standard"
      ],
      "aliases": [
        "h3",
        "HTTP 3"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "HTTPの意味論をQUIC上へ写像し、接続内のストリーム単位で転送する仕様。",
      "canonical_source": "rfc9114",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "2022-06",
          "precision": "month",
          "sortKey": "2022-06-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nRFC 9114は、HTTP/2の設計を基礎にしつつ、HTTPの意味論をQUIC上で利用するHTTP/3を\n定義した。[^rfc9114]\n"
    },
    {
      "id": "iphone",
      "schema_version": 2,
      "name": "iPhone",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "anchor"
      ],
      "aliases": [
        "Apple iPhone"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "2007年の初代発表に始まり、現在も新製品の投入が続くAppleのスマートフォン系列。",
      "canonical_source": "apple-iphone-announcement-2007",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m4-anchor"
      ],
      "period": {
        "start": {
          "value": "2007-01-09",
          "precision": "day",
          "sortKey": "2007-01-09"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nAppleは2007年1月9日、電話、タッチ操作のwide-screen iPod、Internet communications deviceを\n組み合わせた製品として初代iPhoneを発表した。[^apple-iphone-announcement-2007]\n\n2026年3月にもiPhone 17 lineupへiPhone 17eが追加され、iPhone系列の新製品投入が続いている。\n[^apple-iphone-17e-announcement-2026]\n"
    },
    {
      "id": "microsoft-windows",
      "schema_version": 2,
      "name": "Microsoft Windows",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "anchor"
      ],
      "aliases": [
        "Windows"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "1985年の小売版出荷に始まり、現在もWindows 11として更新が続くOS系列。",
      "canonical_source": "microsoft-history-1985",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m4-anchor"
      ],
      "period": {
        "start": {
          "value": "1985-11-20",
          "precision": "day",
          "sortKey": "1985-11-20"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nMicrosoftは1985年11月20日、MS-DOSの機能を拡張するOSとしてWindowsの小売版を出荷した。\n[^microsoft-history-1985]\n\n現在のWindows 11は年次feature updateと月次security updateが提供され、複数versionの\nservicingが続いている。[^microsoft-windows-11-release-information]\n"
    },
    {
      "id": "ncsa-mosaic",
      "schema_version": 2,
      "name": "NCSA Mosaic",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "browser"
      ],
      "aliases": [
        "Mosaic"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "NCSAが開発し、Webの利用拡大に影響を与えたグラフィカルWebブラウザー。",
      "canonical_source": "ncsa-mosaic-history",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1993",
          "precision": "year",
          "sortKey": "1993-01-01"
        },
        "end": null,
        "end_state": "unknown"
      },
      "stewards": [],
      "body": "\nNCSAの公式回顧資料は、Mosaicを研究者以外にもWebを使いやすくしたブラウザーとして\n位置付けている。[^ncsa-mosaic-history]\n"
    },
    {
      "id": "nintendo-game-systems",
      "schema_version": 2,
      "name": "Nintendo game systems",
      "name_ja": "任天堂ゲーム機",
      "kind": "technology",
      "topics": [
        "anchor"
      ],
      "aliases": [
        "任天堂ハード",
        "Nintendo consoles"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "1977年の初期家庭用機から現在まで続く任天堂の家庭用・携帯型ゲーム機系列。",
      "canonical_source": "nintendo-company-history",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m4-anchor"
      ],
      "period": {
        "start": {
          "value": "1977",
          "precision": "year",
          "sortKey": "1977-01-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\n任天堂の公式沿革は、1977年のTV Game 15とTV Game 6を同社初の家庭用ゲーム機として記録し、\n以後の家庭用・携帯型ゲーム機の発売年を列挙している。[^nintendo-company-history]\n\n2025年発売のNintendo Switch 2には現在も公式製品ページが提供されているため、この系列は\n継続中と判定する。[^nintendo-switch-2-hardware]\n"
    },
    {
      "id": "playstation",
      "schema_version": 2,
      "name": "PlayStation",
      "name_ja": "プレイステーション",
      "kind": "technology",
      "topics": [
        "anchor"
      ],
      "aliases": [
        "PS"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "1994年の初代発売に始まり、現在もPS5を中心に展開が続くゲーム機・platform系列。",
      "canonical_source": "playstation-history-1994-ps-one",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m4-anchor"
      ],
      "period": {
        "start": {
          "value": "1994-12-03",
          "precision": "day",
          "sortKey": "1994-12-03"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\n初代PlayStationは1994年12月3日に日本で発売され、1995年に北米と欧州へ展開された。\n[^playstation-history-1994-ps-one] SonyのCorporate Report 2019も、初代からPS4、PSP、Vitaまでの\n発売月を横断的に記録している。[^sony-corporate-report-2019]\n\n2026年6月のSony公式資料は、発売6年目のPS5 businessと継続中のplatform engagementを\n報告している。[^sony-gns-segment-meeting-2026]\n"
    },
    {
      "id": "quic",
      "schema_version": 2,
      "name": "QUIC",
      "name_ja": null,
      "kind": "specification",
      "topics": [
        "protocol"
      ],
      "aliases": [
        "IETF QUIC"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "UDP上で多重化された安全な接続を提供する汎用トランスポートプロトコル。",
      "canonical_source": "rfc9000",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "2021-05",
          "precision": "month",
          "sortKey": "2021-05-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nRFC 9000はQUICを、フロー制御されたストリーム、低遅延な接続確立、経路変更を含む\nUDPベースの安全なトランスポートとして定義した。[^rfc9000]\n"
    },
    {
      "id": "spdy",
      "schema_version": 2,
      "name": "SPDY",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "protocol"
      ],
      "aliases": [
        "SPDY protocol"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "Webページ読み込みの遅延削減を目的にGoogleが公開した実験的なアプリケーション層プロトコル。",
      "canonical_source": "chromium-spdy-announcement",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "2009-11-11",
          "precision": "day",
          "sortKey": "2009-11-11"
        },
        "end": null,
        "end_state": "unknown"
      },
      "stewards": [],
      "body": "\nSPDYはWebのlatency削減を目的とする初期段階の研究projectとして、multiplexed streams、\nrequest prioritization、HTTP header compressionを試作した。[^chromium-spdy-announcement]\nIETF HTTP Working GroupはSPDYをHTTP/2の出発点に選び、Chromiumは2016年にHTTP/2への移行に伴う\nChromeでのSPDY support終了を発表した。[^ietf-http2-approved] [^chromium-spdy-transition-2016]\n"
    },
    {
      "id": "url",
      "schema_version": 2,
      "name": "Uniform Resource Locator",
      "name_ja": "統一資源位置指定子",
      "kind": "specification",
      "topics": [
        "web-standard",
        "protocol"
      ],
      "aliases": [
        "URL",
        "Uniform Resource Locators"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "URLの表現、parsing、serializationとWeb platformのURL APIを定義する仕様。",
      "canonical_source": "whatwg-url-standard",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1990",
          "precision": "year",
          "sortKey": "1990-01-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nRFC 1738はURLのsyntaxとsemanticsをまとめ、Webでの利用が1990年に始まったと記録している。\n現在はWHATWG URL StandardがURL、domain、IP address、parsing、serialization、APIを\nLiving Standardとして定義している。[^rfc1738] [^whatwg-url-standard]\n"
    },
    {
      "id": "w3c",
      "schema_version": 2,
      "name": "World Wide Web Consortium",
      "name_ja": null,
      "kind": "organization",
      "topics": [
        "organization",
        "web-standard"
      ],
      "aliases": [
        "W3C"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "Webの長期的発展と相互運用性のために設立された標準化組織。",
      "canonical_source": "w3c-web-history",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1994-10",
          "precision": "month",
          "sortKey": "1994-10-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\nW3Cの公式史は、Tim Berners-LeeがMIT/LCSを拠点として1994年10月に組織を設立し、\nCERNも支援したと記録している。[^w3c-web-history]\n"
    },
    {
      "id": "world-wide-web",
      "schema_version": 2,
      "name": "World Wide Web",
      "name_ja": "ワールド・ワイド・ウェブ",
      "kind": "concept",
      "topics": [
        "web-standard"
      ],
      "aliases": [
        "WWW",
        "Web"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "CERNで提案された、ネットワーク上の情報をハイパーテキストで結ぶ情報システム。",
      "canonical_source": "www-proposal-1989",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1989-03",
          "precision": "month",
          "sortKey": "1989-03-01"
        },
        "end": null,
        "end_state": "ongoing"
      },
      "stewards": [],
      "body": "\n1989年3月の提案書は、CERN内外の情報をリンクで結び、異なるシステムから参照できる\n情報管理の構想を示した。[^www-proposal-1989]\n"
    },
    {
      "id": "worldwideweb-browser",
      "schema_version": 2,
      "name": "WorldWideWeb",
      "name_ja": null,
      "kind": "technology",
      "topics": [
        "browser"
      ],
      "aliases": [
        "Nexus",
        "WorldWideWeb browser"
      ],
      "former_slugs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "summary": "Tim Berners-LeeがNeXT上で開発した、最初のWebブラウザー兼エディター。",
      "canonical_source": "timbl-worldwideweb-browser",
      "wikidata": null,
      "book_refs": [],
      "tags": [
        "m1-seed"
      ],
      "period": {
        "start": {
          "value": "1990-10",
          "precision": "month",
          "sortKey": "1990-10-01"
        },
        "end": null,
        "end_state": "unknown"
      },
      "stewards": [],
      "body": "\nTim Berners-LeeはNeXT上で最初のブラウザー兼エディターWorldWideWebを開発し、後に\n抽象的なWebとの混同を避けるためNexusへ改名した。[^timbl-worldwideweb-browser]\nW3Cの公式史は、この実装を1990年10月としている。[^w3c-web-history]\n"
    }
  ],
  "events": [
    {
      "id": "nintendo-tv-game-1977",
      "schema_version": 1,
      "title": "任天堂がテレビゲーム15とテレビゲーム6を発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "supporting",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "1977"
          }
        }
      ],
      "dates": [
        {
          "value": "1977",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "1977"
              }
            }
          ],
          "precision": "year",
          "sortKey": "1977-01-01"
        }
      ],
      "preferredDate": {
        "value": "1977",
        "precision": "year",
        "sortKey": "1977-01-01"
      },
      "body": "\n任天堂は1977年、同社初の家庭用ゲーム機としてTV Game 15とTV Game 6を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "nintendo-game-and-watch-1980",
      "schema_version": 1,
      "title": "任天堂がゲーム&ウオッチを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "1980"
          }
        }
      ],
      "dates": [
        {
          "value": "1980",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "1980"
              }
            }
          ],
          "precision": "year",
          "sortKey": "1980-01-01"
        }
      ],
      "preferredDate": {
        "value": "1980",
        "precision": "year",
        "sortKey": "1980-01-01"
      },
      "body": "\n任天堂は1980年、携帯型ゲーム機「ゲーム&ウオッチ」を開発し、販売を開始した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "nintendo-famicom-1983",
      "schema_version": 1,
      "title": "任天堂がファミリーコンピュータを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "1983"
          }
        }
      ],
      "dates": [
        {
          "value": "1983",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "1983"
              }
            }
          ],
          "precision": "year",
          "sortKey": "1983-01-01"
        }
      ],
      "preferredDate": {
        "value": "1983",
        "precision": "year",
        "sortKey": "1983-01-01"
      },
      "body": "\n任天堂は1983年、家庭用テレビゲーム機「ファミリーコンピュータ」を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "windows-1-shipped-1985",
      "schema_version": 1,
      "title": "MicrosoftがWindowsの小売版を出荷する",
      "event_type": "general_availability",
      "about": [
        "microsoft-windows"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "microsoft-history-1985",
          "locator": {
            "type": "other",
            "value": "Timeline entry: November 20, 1985"
          }
        }
      ],
      "dates": [
        {
          "value": "1985-11-20",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "microsoft-history-1985",
              "locator": {
                "type": "other",
                "value": "Timeline entry: November 20, 1985"
              }
            }
          ],
          "precision": "day",
          "sortKey": "1985-11-20"
        }
      ],
      "preferredDate": {
        "value": "1985-11-20",
        "precision": "day",
        "sortKey": "1985-11-20"
      },
      "body": "\nMicrosoftは1985年11月20日、MS-DOSの機能を拡張するOSとしてWindowsの小売版を出荷した。\n[^microsoft-history-1985]\n"
    },
    {
      "id": "nintendo-game-boy-1989",
      "schema_version": 1,
      "title": "任天堂がゲームボーイを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "1989"
          }
        }
      ],
      "dates": [
        {
          "value": "1989",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "1989"
              }
            }
          ],
          "precision": "year",
          "sortKey": "1989-01-01"
        }
      ],
      "preferredDate": {
        "value": "1989",
        "precision": "year",
        "sortKey": "1989-01-01"
      },
      "body": "\n任天堂は1989年、携帯型ゲーム機「ゲームボーイ」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "world-wide-web-proposal-1989",
      "schema_version": 1,
      "title": "World Wide Webの原型となる情報管理提案書が作成される",
      "event_type": "concept_proposed",
      "about": [
        "world-wide-web"
      ],
      "topics": [
        "web-standard"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "www-proposal-1989",
          "locator": {
            "type": "heading",
            "value": "Information Management: A Proposal"
          }
        }
      ],
      "dates": [
        {
          "value": "1989-03",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "www-proposal-1989",
              "locator": {
                "type": "heading",
                "value": "Information Management: A Proposal"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1989-03-01"
        }
      ],
      "preferredDate": {
        "value": "1989-03",
        "precision": "month",
        "sortKey": "1989-03-01"
      },
      "body": "\nTim Berners-Leeは、CERNの情報をリンクで結ぶ分散型の情報管理案を1989年3月に\n作成した。[^www-proposal-1989]\n"
    },
    {
      "id": "nintendo-super-famicom-1990",
      "schema_version": 1,
      "title": "任天堂がスーパーファミコンを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "1990"
          }
        }
      ],
      "dates": [
        {
          "value": "1990",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "1990"
              }
            }
          ],
          "precision": "year",
          "sortKey": "1990-01-01"
        }
      ],
      "preferredDate": {
        "value": "1990",
        "precision": "year",
        "sortKey": "1990-01-01"
      },
      "body": "\n任天堂は1990年、家庭用テレビゲーム機「スーパーファミコン」を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "worldwideweb-browser-server-implemented-1990",
      "schema_version": 1,
      "title": "WorldWideWebブラウザーとCERN httpdが実装される",
      "event_type": "implementation",
      "about": [
        "worldwideweb-browser",
        "cern-httpd"
      ],
      "topics": [
        "browser",
        "protocol"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "w3c-web-history",
          "locator": {
            "type": "paragraph",
            "value": "History, paragraph 1"
          }
        }
      ],
      "dates": [
        {
          "value": "1990-10",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "w3c-web-history",
              "locator": {
                "type": "paragraph",
                "value": "History, paragraph 1"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1990-10-01"
        }
      ],
      "preferredDate": {
        "value": "1990-10",
        "precision": "month",
        "sortKey": "1990-10-01"
      },
      "body": "\nW3Cの公式史は、1990年10月にブラウザー兼エディターWorldWideWebとHTTPサーバー\nhttpdが書かれたと記録している。[^w3c-web-history]\n"
    },
    {
      "id": "world-wide-web-announced-1991",
      "schema_version": 1,
      "title": "WWWソフトウェアがインターネットのニュースグループで告知される",
      "event_type": "announcement",
      "about": [
        "world-wide-web"
      ],
      "topics": [
        "web-standard"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "www-announcement-1991",
          "locator": {
            "type": "other",
            "value": "Full Usenet announcement"
          }
        },
        {
          "source": "cern-short-history-web",
          "locator": {
            "type": "heading",
            "value": "The Web extends"
          }
        }
      ],
      "dates": [
        {
          "value": "1991-08-06",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "www-announcement-1991",
              "locator": {
                "type": "other",
                "value": "Message Date header"
              }
            }
          ],
          "precision": "day",
          "sortKey": "1991-08-06"
        }
      ],
      "preferredDate": {
        "value": "1991-08-06",
        "precision": "day",
        "sortKey": "1991-08-06"
      },
      "body": "\nTim Berners-Leeは1991年8月6日、WWWプロジェクトの目的、NeXT用エディター、line-mode\nブラウザー、HTTPサーバー、anonymous FTPで入手可能なコードをニュースグループで案内した。\n[^www-announcement-1991] [^cern-short-history-web]\n"
    },
    {
      "id": "ncsa-mosaic-released-1993",
      "schema_version": 1,
      "title": "NCSA Mosaicの最初の版が公開される",
      "event_type": "implementation",
      "about": [
        "ncsa-mosaic"
      ],
      "topics": [
        "browser"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "cern-short-history-web",
          "locator": {
            "type": "heading",
            "value": "The Web extends"
          }
        },
        {
          "source": "ncsa-mosaic-history",
          "locator": {
            "type": "heading",
            "value": "NCSA Mosaic"
          }
        }
      ],
      "dates": [
        {
          "value": "1993",
          "preferred": true,
          "certainty": "approximate",
          "evidence": [
            {
              "source": "cern-short-history-web",
              "locator": {
                "type": "heading",
                "value": "The Web extends"
              }
            }
          ],
          "note": "CERNの公式史はearly 1993と記録しているため、年精度で収録する。",
          "precision": "year",
          "sortKey": "1993-01-01"
        }
      ],
      "preferredDate": {
        "value": "1993",
        "precision": "year",
        "sortKey": "1993-01-01"
      },
      "body": "\nCERNの公式史は、NCSAが1993年初頭にX Window System向けMosaicの最初の版を公開したと\n記録している。NCSAの回顧資料は、導入しやすさと本文中の画像表示が従来より広い利用に\nつながったと説明している。[^cern-short-history-web] [^ncsa-mosaic-history]\n"
    },
    {
      "id": "cern-web-royalty-free-1993",
      "schema_version": 1,
      "title": "CERNがWorldWideWebのソースコードをロイヤリティフリーで公開する",
      "event_type": "announcement",
      "about": [
        "world-wide-web"
      ],
      "topics": [
        "web-standard"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "cern-short-history-web",
          "locator": {
            "type": "heading",
            "value": "The Web extends"
          }
        }
      ],
      "dates": [
        {
          "value": "1993-04-30",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "cern-short-history-web",
              "locator": {
                "type": "heading",
                "value": "The Web extends"
              }
            }
          ],
          "precision": "day",
          "sortKey": "1993-04-30"
        }
      ],
      "preferredDate": {
        "value": "1993-04-30",
        "precision": "day",
        "sortKey": "1993-04-30"
      },
      "body": "\nCERNは1993年4月30日、WorldWideWebのsource codeをroyalty-free basisで利用可能にし、\nfree softwareとした。[^cern-short-history-web]\n"
    },
    {
      "id": "w3c-founded-1994",
      "schema_version": 1,
      "title": "World Wide Web Consortiumが設立される",
      "event_type": "announcement",
      "about": [
        "w3c"
      ],
      "topics": [
        "organization",
        "web-standard"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "w3c-web-history",
          "locator": {
            "type": "section",
            "value": "The Hosted model (1994-2022)"
          }
        }
      ],
      "dates": [
        {
          "value": "1994-10",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "w3c-web-history",
              "locator": {
                "type": "section",
                "value": "The Hosted model (1994-2022)"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1994-10-01"
        }
      ],
      "preferredDate": {
        "value": "1994-10",
        "precision": "month",
        "sortKey": "1994-10-01"
      },
      "body": "\nW3Cの公式史は、MIT/LCSを拠点として1994年10月にWorld Wide Web Consortiumが\n設立されたと記録している。[^w3c-web-history]\n"
    },
    {
      "id": "playstation-launched-1994",
      "schema_version": 1,
      "title": "初代PlayStationが発売される",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-history-1994-ps-one",
          "locator": {
            "type": "heading",
            "value": "December 3rd 1994"
          }
        }
      ],
      "dates": [
        {
          "value": "1994-12-03",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-history-1994-ps-one",
              "locator": {
                "type": "heading",
                "value": "December 3rd 1994"
              }
            }
          ],
          "precision": "day",
          "sortKey": "1994-12-03"
        }
      ],
      "preferredDate": {
        "value": "1994-12-03",
        "precision": "day",
        "sortKey": "1994-12-03"
      },
      "body": "\n初代PlayStationは1994年12月3日に日本で発売された。北米では1995年9月9日、欧州では\n同年9月29日に発売された。[^playstation-history-1994-ps-one]\n"
    },
    {
      "id": "apache-http-server-released-1995",
      "schema_version": 1,
      "title": "Apache HTTP Server 0.6.2が公開される",
      "event_type": "implementation",
      "about": [
        "apache-http-server"
      ],
      "topics": [
        "protocol"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "apache-http-server-history",
          "locator": {
            "type": "heading",
            "value": "How Apache Came to Be"
          }
        }
      ],
      "dates": [
        {
          "value": "1995-04",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "apache-http-server-history",
              "locator": {
                "type": "heading",
                "value": "How Apache Came to Be"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1995-04-01"
        }
      ],
      "preferredDate": {
        "value": "1995-04",
        "precision": "month",
        "sortKey": "1995-04-01"
      },
      "body": "\nApache HTTP Server Projectの公式史は、共同開発の最初の公開版Apache 0.6.2を\n1995年4月にリリースしたと記録している。[^apache-http-server-history]\n"
    },
    {
      "id": "html-20-rfc1866-1995",
      "schema_version": 1,
      "title": "HTML 2.0がRFC 1866として公開される",
      "event_type": "specification",
      "about": [
        "html"
      ],
      "topics": [
        "web-standard"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc1866",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        },
        {
          "source": "rfc1866",
          "locator": {
            "type": "heading",
            "value": "Status of This Memo"
          }
        },
        {
          "source": "rfc1866",
          "locator": {
            "type": "heading",
            "value": "Abstract"
          }
        }
      ],
      "dates": [
        {
          "value": "1995-11",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc1866",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1995-11-01"
        }
      ],
      "preferredDate": {
        "value": "1995-11",
        "precision": "month",
        "sortKey": "1995-11-01"
      },
      "body": "\nRFC 1866はStandards Track文書としてHTML 2.0を定義し、1994年6月より前の\n実装上の慣行を形式化した。\n[^rfc1866]\n"
    },
    {
      "id": "nintendo-64-1996",
      "schema_version": 1,
      "title": "任天堂がNINTENDO64を発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "1996"
          }
        }
      ],
      "dates": [
        {
          "value": "1996",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "1996"
              }
            }
          ],
          "precision": "year",
          "sortKey": "1996-01-01"
        }
      ],
      "preferredDate": {
        "value": "1996",
        "precision": "year",
        "sortKey": "1996-01-01"
      },
      "body": "\n任天堂は1996年、家庭用テレビゲーム機「NINTENDO64」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "http-10-rfc1945-1996",
      "schema_version": 1,
      "title": "HTTP/1.0がRFC 1945として公開される",
      "event_type": "specification",
      "about": [
        "http-10"
      ],
      "topics": [
        "protocol",
        "web-standard"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc1945",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        },
        {
          "source": "rfc1945",
          "locator": {
            "type": "heading",
            "value": "Status of This Memo"
          }
        }
      ],
      "dates": [
        {
          "value": "1996-05",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc1945",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1996-05-01"
        }
      ],
      "preferredDate": {
        "value": "1996-05",
        "precision": "month",
        "sortKey": "1996-05-01"
      },
      "body": "\nRFC 1945はHTTP/1.0の共通利用法を情報提供RFCとして記録した。\n[^rfc1945]\n"
    },
    {
      "id": "http-11-rfc2068-1997",
      "schema_version": 1,
      "title": "HTTP/1.1がRFC 2068として公開される",
      "event_type": "specification",
      "about": [
        "http-11"
      ],
      "topics": [
        "protocol",
        "web-standard"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc2068",
          "locator": {
            "type": "section",
            "value": "1.1 Purpose"
          }
        },
        {
          "source": "rfc2068",
          "locator": {
            "type": "heading",
            "value": "Status of This Memo"
          }
        }
      ],
      "dates": [
        {
          "value": "1997-01",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc2068",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1997-01-01"
        }
      ],
      "preferredDate": {
        "value": "1997-01",
        "precision": "month",
        "sortKey": "1997-01-01"
      },
      "body": "\nRFC 2068はProposed StandardとしてHTTP/1.1を定義し、HTTP/1.0で不十分だった\nproxy、cache、persistent connection、virtual host等への対応を改善した。[^rfc2068]\n"
    },
    {
      "id": "http-11-rfc2616-1999",
      "schema_version": 1,
      "title": "HTTP/1.1仕様がRFC 2616で改訂される",
      "event_type": "specification",
      "about": [
        "http-11"
      ],
      "topics": [
        "protocol",
        "web-standard"
      ],
      "prominence": "supporting",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc2616",
          "locator": {
            "type": "section",
            "value": "1.1 Purpose"
          }
        },
        {
          "source": "rfc2616",
          "locator": {
            "type": "heading",
            "value": "Status of This Memo"
          }
        },
        {
          "source": "rfc2616",
          "locator": {
            "type": "other",
            "value": "RFC header"
          }
        }
      ],
      "dates": [
        {
          "value": "1999-06",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc2616",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "1999-06-01"
        }
      ],
      "preferredDate": {
        "value": "1999-06",
        "precision": "month",
        "sortKey": "1999-06-01"
      },
      "body": "\nRFC 2616はDraft StandardとしてHTTP/1.1を定義し、RFC 2068を置き換えた。\n[^rfc2616]\n"
    },
    {
      "id": "playstation-2-launched-2000",
      "schema_version": 1,
      "title": "PlayStation 2が発売される",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-history-2000-ps2-psp",
          "locator": {
            "type": "heading",
            "value": "March 4th 2000"
          }
        }
      ],
      "dates": [
        {
          "value": "2000-03-04",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-history-2000-ps2-psp",
              "locator": {
                "type": "heading",
                "value": "March 4th 2000"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2000-03-04"
        }
      ],
      "preferredDate": {
        "value": "2000-03-04",
        "precision": "day",
        "sortKey": "2000-03-04"
      },
      "body": "\nPlayStation 2は2000年3月4日に日本で発売された。北米と欧州では同年10月、11月に続いた。\nDVD playback、online functionality、初代PlayStation discとのbackward compatibilityを\n備えていた。[^playstation-history-2000-ps2-psp]\n"
    },
    {
      "id": "nintendo-game-boy-advance-2001",
      "schema_version": 1,
      "title": "任天堂がゲームボーイアドバンスを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2001"
          }
        }
      ],
      "dates": [
        {
          "value": "2001",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2001"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2001-01-01"
        }
      ],
      "preferredDate": {
        "value": "2001",
        "precision": "year",
        "sortKey": "2001-01-01"
      },
      "body": "\n任天堂は2001年、携帯型ゲーム機「ゲームボーイアドバンス」を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "nintendo-gamecube-2001",
      "schema_version": 1,
      "title": "任天堂がニンテンドー ゲームキューブを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2001"
          }
        }
      ],
      "dates": [
        {
          "value": "2001",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2001"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2001-01-01"
        }
      ],
      "preferredDate": {
        "value": "2001",
        "precision": "year",
        "sortKey": "2001-01-01"
      },
      "body": "\n任天堂は2001年、家庭用テレビゲーム機「ニンテンドー ゲームキューブ」を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "windows-xp-launched-2001",
      "schema_version": 1,
      "title": "Windows XPが一般提供される",
      "event_type": "general_availability",
      "about": [
        "microsoft-windows"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "microsoft-windows-xp-countdown-2001",
          "locator": {
            "type": "paragraph",
            "value": "Opening announcement paragraph"
          }
        }
      ],
      "dates": [
        {
          "value": "2001-10-25",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "microsoft-windows-xp-countdown-2001",
              "locator": {
                "type": "paragraph",
                "value": "Opening announcement paragraph"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2001-10-25"
        }
      ],
      "preferredDate": {
        "value": "2001-10-25",
        "precision": "day",
        "sortKey": "2001-10-25"
      },
      "body": "\nMicrosoftは2001年10月25日、Windows XPを新規PC、フル版、アップグレード版として\n小売提供した。[^microsoft-windows-xp-countdown-2001]\n"
    },
    {
      "id": "nintendo-ds-2004",
      "schema_version": 1,
      "title": "任天堂がニンテンドーDSを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2004"
          }
        }
      ],
      "dates": [
        {
          "value": "2004",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2004"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2004-01-01"
        }
      ],
      "preferredDate": {
        "value": "2004",
        "precision": "year",
        "sortKey": "2004-01-01"
      },
      "body": "\n任天堂は2004年、携帯型ゲーム機「ニンテンドーDS」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "playstation-portable-launched-2004",
      "schema_version": 1,
      "title": "PlayStation Portableが発売される",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-history-2000-ps2-psp",
          "locator": {
            "type": "heading",
            "value": "December 11th 2004"
          }
        }
      ],
      "dates": [
        {
          "value": "2004-12-11",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-history-2000-ps2-psp",
              "locator": {
                "type": "heading",
                "value": "December 11th 2004"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2004-12-11"
        }
      ],
      "preferredDate": {
        "value": "2004-12-11",
        "precision": "day",
        "sortKey": "2004-12-11"
      },
      "body": "\nPlayStation Portableは2004年12月11日に日本で発売された。携帯型gamingにonline technologyと\nmedia playbackを組み合わせ、北米と欧州では2005年に発売された。\n[^playstation-history-2000-ps2-psp]\n"
    },
    {
      "id": "nintendo-wii-2006",
      "schema_version": 1,
      "title": "任天堂がWiiを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2006"
          }
        }
      ],
      "dates": [
        {
          "value": "2006",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2006"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2006-01-01"
        }
      ],
      "preferredDate": {
        "value": "2006",
        "precision": "year",
        "sortKey": "2006-01-01"
      },
      "body": "\n任天堂は2006年、家庭用テレビゲーム機「Wii」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "playstation-3-launched-2006",
      "schema_version": 1,
      "title": "PlayStation 3が発売される",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-history-2007-ps3-ps-vita",
          "locator": {
            "type": "heading",
            "value": "November 11th 2006"
          }
        }
      ],
      "dates": [
        {
          "value": "2006-11-11",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-history-2007-ps3-ps-vita",
              "locator": {
                "type": "heading",
                "value": "November 11th 2006"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2006-11-11"
        }
      ],
      "preferredDate": {
        "value": "2006-11-11",
        "precision": "day",
        "sortKey": "2006-11-11"
      },
      "body": "\nPlayStation 3は2006年11月11日に日本で発売され、北米、欧州へ順次展開された。online gaming、\ndigital services、Blu-ray Discを同世代の特徴とした。[^playstation-history-2007-ps3-ps-vita]\n"
    },
    {
      "id": "iphone-announced-2007",
      "schema_version": 1,
      "title": "Appleが初代iPhoneを発表する",
      "event_type": "announcement",
      "about": [
        "iphone"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "apple-iphone-announcement-2007",
          "locator": {
            "type": "heading",
            "value": "Apple Reinvents the Phone with iPhone"
          }
        }
      ],
      "dates": [
        {
          "value": "2007-01-09",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "apple-iphone-announcement-2007",
              "locator": {
                "type": "other",
                "value": "Press release publication date"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2007-01-09"
        }
      ],
      "preferredDate": {
        "value": "2007-01-09",
        "precision": "day",
        "sortKey": "2007-01-09"
      },
      "body": "\nAppleは2007年1月9日、電話、タッチ操作のwide-screen iPod、Internet communications deviceを\n組み合わせた製品としてiPhoneを発表した。米国での販売は同年6月に予定されていた。\n[^apple-iphone-announcement-2007]\n"
    },
    {
      "id": "nintendo-dsi-2008",
      "schema_version": 1,
      "title": "任天堂がニンテンドーDSiを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "supporting",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2008"
          }
        }
      ],
      "dates": [
        {
          "value": "2008",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2008"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2008-01-01"
        }
      ],
      "preferredDate": {
        "value": "2008",
        "precision": "year",
        "sortKey": "2008-01-01"
      },
      "body": "\n任天堂は2008年、携帯型ゲーム機「ニンテンドーDSi」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "windows-7-launched-2009",
      "schema_version": 1,
      "title": "Windows 7が一般提供される",
      "event_type": "general_availability",
      "about": [
        "microsoft-windows"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "microsoft-windows-7-arrives-2009",
          "locator": {
            "type": "heading",
            "value": "Windows 7 Arrives Today With New Offers, New PCs, And More!"
          }
        }
      ],
      "dates": [
        {
          "value": "2009-10-22",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "microsoft-windows-7-arrives-2009",
              "locator": {
                "type": "other",
                "value": "Article publication date"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2009-10-22"
        }
      ],
      "preferredDate": {
        "value": "2009-10-22",
        "precision": "day",
        "sortKey": "2009-10-22"
      },
      "body": "\nMicrosoftは2009年10月22日、Windows 7を世界で提供開始し、新規PCとパッケージ製品として\n入手可能にした。[^microsoft-windows-7-arrives-2009]\n"
    },
    {
      "id": "spdy-announced-2009",
      "schema_version": 1,
      "title": "ChromiumプロジェクトがSPDYを発表する",
      "event_type": "announcement",
      "about": [
        "spdy"
      ],
      "topics": [
        "protocol"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "chromium-spdy-announcement",
          "locator": {
            "type": "heading",
            "value": "A 2x Faster Web"
          }
        }
      ],
      "dates": [
        {
          "value": "2009-11-11",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "chromium-spdy-announcement",
              "locator": {
                "type": "heading",
                "value": "A 2x Faster Web"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2009-11-11"
        }
      ],
      "preferredDate": {
        "value": "2009-11-11",
        "precision": "day",
        "sortKey": "2009-11-11"
      },
      "body": "\nChromium Blogは2009年11月11日、Webのlatency削減を目的とする初期段階の研究projectとして\nSPDYを発表し、multiplexed streams、request prioritization、HTTP header compressionを備えた\n試作を公開した。[^chromium-spdy-announcement]\n"
    },
    {
      "id": "iphone-4-announced-2010",
      "schema_version": 1,
      "title": "AppleがiPhone 4を発表する",
      "event_type": "announcement",
      "about": [
        "iphone"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "apple-iphone-4-announcement-2010",
          "locator": {
            "type": "heading",
            "value": "Apple Presents iPhone 4"
          }
        }
      ],
      "dates": [
        {
          "value": "2010-06-07",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "apple-iphone-4-announcement-2010",
              "locator": {
                "type": "other",
                "value": "Press release publication date"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2010-06-07"
        }
      ],
      "preferredDate": {
        "value": "2010-06-07",
        "precision": "day",
        "sortKey": "2010-06-07"
      },
      "body": "\nAppleは2010年6月7日、FaceTime、Retina display、新しいglass／stainless steel designを\n備えるiPhone 4を発表した。米国、日本などでの販売開始は同年6月24日と案内された。\n[^apple-iphone-4-announcement-2010]\n"
    },
    {
      "id": "nintendo-3ds-2011",
      "schema_version": 1,
      "title": "任天堂がニンテンドー3DSを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2011"
          }
        }
      ],
      "dates": [
        {
          "value": "2011",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2011"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2011-01-01"
        }
      ],
      "preferredDate": {
        "value": "2011",
        "precision": "year",
        "sortKey": "2011-01-01"
      },
      "body": "\n任天堂は2011年、携帯型ゲーム機「ニンテンドー3DS」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "playstation-vita-launched-2011",
      "schema_version": 1,
      "title": "PlayStation Vitaが発売される",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-history-2007-ps3-ps-vita",
          "locator": {
            "type": "heading",
            "value": "December 17th 2011"
          }
        }
      ],
      "dates": [
        {
          "value": "2011-12-17",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-history-2007-ps3-ps-vita",
              "locator": {
                "type": "heading",
                "value": "December 17th 2011"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2011-12-17"
        }
      ],
      "preferredDate": {
        "value": "2011-12-17",
        "precision": "day",
        "sortKey": "2011-12-17"
      },
      "body": "\nPlayStation Vitaは2011年12月17日に日本で発売され、北米と欧州では2012年2月に発売された。\nOLED display、touch screen、rear touchpad、Remote Playを備えていた。\n[^playstation-history-2007-ps3-ps-vita]\n"
    },
    {
      "id": "nintendo-wii-u-2012",
      "schema_version": 1,
      "title": "任天堂がWii Uを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2012"
          }
        }
      ],
      "dates": [
        {
          "value": "2012",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2012"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2012-01-01"
        }
      ],
      "preferredDate": {
        "value": "2012",
        "precision": "year",
        "sortKey": "2012-01-01"
      },
      "body": "\n任天堂は2012年、家庭用テレビゲーム機「Wii U」を発売した。[^nintendo-company-history]\n"
    },
    {
      "id": "playstation-4-launched-2013",
      "schema_version": 1,
      "title": "PlayStation 4が発売される",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-history-2013-ps4-ps-vr",
          "locator": {
            "type": "heading",
            "value": "November 15th 2013"
          }
        }
      ],
      "dates": [
        {
          "value": "2013-11-15",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-history-2013-ps4-ps-vr",
              "locator": {
                "type": "heading",
                "value": "November 15th 2013"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2013-11-15"
        }
      ],
      "preferredDate": {
        "value": "2013-11-15",
        "precision": "day",
        "sortKey": "2013-11-15"
      },
      "body": "\nPlayStation 4は2013年11月15日に北米で最初に発売され、同月に欧州、2014年2月に日本へ\n展開された。Share button、live gameplay streaming、Share Playなど、socialで共有可能な\n体験を重視した。[^playstation-history-2013-ps4-ps-vr]\n"
    },
    {
      "id": "nintendo-new-3ds-2014",
      "schema_version": 1,
      "title": "任天堂がNewニンテンドー3DSを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "supporting",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2014"
          }
        }
      ],
      "dates": [
        {
          "value": "2014",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2014"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2014-01-01"
        }
      ],
      "preferredDate": {
        "value": "2014",
        "precision": "year",
        "sortKey": "2014-01-01"
      },
      "body": "\n任天堂は2014年、携帯型ゲーム機「Newニンテンドー3DS」を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "http-2-rfc7540-2015",
      "schema_version": 1,
      "title": "HTTP/2がRFC 7540として公開される",
      "event_type": "specification",
      "about": [
        "http-2"
      ],
      "topics": [
        "protocol",
        "web-standard"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc7540",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        }
      ],
      "dates": [
        {
          "value": "2015-05",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc7540",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "2015-05-01"
        }
      ],
      "preferredDate": {
        "value": "2015-05",
        "precision": "month",
        "sortKey": "2015-05-01"
      },
      "body": "\nRFC 7540はHTTP/2を定義し、単一接続上でのstream多重化とheader compressionの利用を\n規定した。[^rfc7540]\n"
    },
    {
      "id": "windows-10-launched-2015",
      "schema_version": 1,
      "title": "Windows 10が一般提供される",
      "event_type": "general_availability",
      "about": [
        "microsoft-windows"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "microsoft-windows-10-availability-2015",
          "locator": {
            "type": "heading",
            "value": "Hello World: Windows 10 Available on July 29"
          }
        }
      ],
      "dates": [
        {
          "value": "2015-07-29",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "microsoft-windows-10-availability-2015",
              "locator": {
                "type": "heading",
                "value": "Hello World: Windows 10 Available on July 29"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2015-07-29"
        }
      ],
      "preferredDate": {
        "value": "2015-07-29",
        "precision": "day",
        "sortKey": "2015-07-29"
      },
      "body": "\nMicrosoftは2015年7月29日、PCとtablet向けWindows 10を無料アップグレードまたは\n新規PCとして提供開始した。[^microsoft-windows-10-availability-2015]\n"
    },
    {
      "id": "nintendo-switch-2017",
      "schema_version": 1,
      "title": "任天堂がNintendo Switchを発売する",
      "event_type": "general_availability",
      "about": [
        "nintendo-game-systems"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "nintendo-company-history",
          "locator": {
            "type": "heading",
            "value": "2017"
          }
        }
      ],
      "dates": [
        {
          "value": "2017",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "nintendo-company-history",
              "locator": {
                "type": "heading",
                "value": "2017"
              }
            }
          ],
          "precision": "year",
          "sortKey": "2017-01-01"
        }
      ],
      "preferredDate": {
        "value": "2017",
        "precision": "year",
        "sortKey": "2017-01-01"
      },
      "body": "\n任天堂は2017年、持ち運べる家庭用テレビゲーム機「Nintendo Switch」を発売した。\n[^nintendo-company-history]\n"
    },
    {
      "id": "iphone-x-announced-2017",
      "schema_version": 1,
      "title": "AppleがiPhone Xを発表する",
      "event_type": "announcement",
      "about": [
        "iphone"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "apple-iphone-x-announcement-2017",
          "locator": {
            "type": "heading",
            "value": "The future is here: iPhone X"
          }
        }
      ],
      "dates": [
        {
          "value": "2017-09-12",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "apple-iphone-x-announcement-2017",
              "locator": {
                "type": "other",
                "value": "Press release publication date"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2017-09-12"
        }
      ],
      "preferredDate": {
        "value": "2017-09-12",
        "precision": "day",
        "sortKey": "2017-09-12"
      },
      "body": "\nAppleは2017年9月12日、Super Retina display、TrueDepth camera、Face IDを備える\niPhone Xを発表した。店頭販売は同年11月3日に始まると案内された。\n[^apple-iphone-x-announcement-2017]\n"
    },
    {
      "id": "iphone-12-announced-2020",
      "schema_version": 1,
      "title": "AppleがiPhone 12を発表する",
      "event_type": "announcement",
      "about": [
        "iphone"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "apple-iphone-12-announcement-2020",
          "locator": {
            "type": "heading",
            "value": "Apple announces iPhone 12 and iPhone 12 mini: A new era for iPhone with 5G"
          }
        }
      ],
      "dates": [
        {
          "value": "2020-10-13",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "apple-iphone-12-announcement-2020",
              "locator": {
                "type": "other",
                "value": "Press release publication date"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2020-10-13"
        }
      ],
      "preferredDate": {
        "value": "2020-10-13",
        "precision": "day",
        "sortKey": "2020-10-13"
      },
      "body": "\nAppleは2020年10月13日、5G、A14 Bionic、MagSafeを導入したiPhone 12と\niPhone 12 miniを発表した。iPhone 12の提供開始は同年10月23日と案内された。\n[^apple-iphone-12-announcement-2020]\n"
    },
    {
      "id": "playstation-5-launched-2020",
      "schema_version": 1,
      "title": "PlayStation 5の地域別発売が始まる",
      "event_type": "general_availability",
      "about": [
        "playstation"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "playstation-ps5-launch-dates-2020",
          "locator": {
            "type": "heading",
            "value": "PlayStation 5 launches in November, starting at $399 for PS5 Digital Edition and $499 for PS5 with Ultra HD Blu-Ray Disc Drive"
          }
        },
        {
          "source": "playstation-history-ps5",
          "locator": {
            "type": "heading",
            "value": "November 12th 2020"
          }
        }
      ],
      "dates": [
        {
          "value": "2020-11-12",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "playstation-ps5-launch-dates-2020",
              "locator": {
                "type": "paragraph",
                "value": "Starting on November 12, PS5 will be available in seven key markets"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2020-11-12"
        }
      ],
      "preferredDate": {
        "value": "2020-11-12",
        "precision": "day",
        "sortKey": "2020-11-12"
      },
      "body": "\nPlayStation 5は2020年11月12日に米国、日本など7市場で発売され、11月19日に残り地域へ\nglobal rolloutが続いた。[^playstation-ps5-launch-dates-2020]\n"
    },
    {
      "id": "quic-rfc9000-2021",
      "schema_version": 1,
      "title": "QUICトランスポートがRFC 9000として公開される",
      "event_type": "specification",
      "about": [
        "quic"
      ],
      "topics": [
        "protocol"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc9000",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        },
        {
          "source": "rfc9000",
          "locator": {
            "type": "heading",
            "value": "Status of This Memo"
          }
        }
      ],
      "dates": [
        {
          "value": "2021-05",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc9000",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "2021-05-01"
        }
      ],
      "preferredDate": {
        "value": "2021-05",
        "precision": "month",
        "sortKey": "2021-05-01"
      },
      "body": "\nRFC 9000はProposed Standardとして、UDP-based、multiplexed、secureなQUIC transportの\ncoreを定義した。[^rfc9000]\n"
    },
    {
      "id": "windows-11-launched-2021",
      "schema_version": 1,
      "title": "Windows 11の段階的な提供が開始される",
      "event_type": "general_availability",
      "about": [
        "microsoft-windows"
      ],
      "topics": [
        "anchor"
      ],
      "prominence": "major",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "microsoft-windows-11-availability-2021",
          "locator": {
            "type": "heading",
            "value": "Windows 11 available on October 5"
          }
        },
        {
          "source": "microsoft-windows-11-availability-2021",
          "locator": {
            "type": "section",
            "value": "Rolling out the free upgrade to Windows 11 in a phased and measured approach"
          }
        }
      ],
      "dates": [
        {
          "value": "2021-10-05",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "microsoft-windows-11-availability-2021",
              "locator": {
                "type": "heading",
                "value": "Windows 11 available on October 5"
              }
            }
          ],
          "precision": "day",
          "sortKey": "2021-10-05"
        }
      ],
      "preferredDate": {
        "value": "2021-10-05",
        "precision": "day",
        "sortKey": "2021-10-05"
      },
      "body": "\nMicrosoftは2021年10月5日、対象Windows 10 PCへの無料アップグレードとWindows 11搭載PCの\n提供を開始した。無料アップグレードは対象機器へ段階的に展開された。\n[^microsoft-windows-11-availability-2021]\n"
    },
    {
      "id": "http-3-rfc9114-2022",
      "schema_version": 1,
      "title": "HTTP/3がRFC 9114として公開される",
      "event_type": "specification",
      "about": [
        "http-3"
      ],
      "topics": [
        "protocol",
        "web-standard"
      ],
      "prominence": "landmark",
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "evidence": [
        {
          "source": "rfc9114",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        },
        {
          "source": "rfc9114",
          "locator": {
            "type": "heading",
            "value": "Status of This Memo"
          }
        }
      ],
      "dates": [
        {
          "value": "2022-06",
          "preferred": true,
          "certainty": "exact",
          "evidence": [
            {
              "source": "rfc9114",
              "locator": {
                "type": "other",
                "value": "RFC header"
              }
            }
          ],
          "precision": "month",
          "sortKey": "2022-06-01"
        }
      ],
      "preferredDate": {
        "value": "2022-06",
        "precision": "month",
        "sortKey": "2022-06-01"
      },
      "body": "\nRFC 9114はProposed Standardとして、HTTP semanticsをQUIC上へmappingするHTTP/3を定義した。\n[^rfc9114]\n"
    }
  ],
  "sources": [
    {
      "id": "apache-http-server-history",
      "schema_version": 2,
      "title": "About the Apache HTTP Server Project",
      "url": "https://httpd.apache.org/ABOUT_APACHE.html",
      "archive_url": "https://web.archive.org/web/20260705072605/https://httpd.apache.org/ABOUT_APACHE.html",
      "published": null,
      "publisher": "Apache HTTP Server Project",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    },
    {
      "id": "apple-iphone-12-announcement-2020",
      "schema_version": 2,
      "title": "Apple announces iPhone 12 and iPhone 12 mini: A new era for iPhone with 5G",
      "url": "https://www.apple.com/newsroom/2020/10/apple-announces-iphone-12-and-iphone-12-mini-a-new-era-for-iphone-with-5g/",
      "archive_url": "https://web.archive.org/web/20260706082340/https://www.apple.com/newsroom/2020/10/apple-announces-iphone-12-and-iphone-12-mini-a-new-era-for-iphone-with-5g/",
      "published": {
        "value": "2020-10-13",
        "precision": "day",
        "sortKey": "2020-10-13"
      },
      "publisher": "Apple",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "apple-iphone-17e-announcement-2026",
      "schema_version": 2,
      "title": "Apple introduces iPhone 17e",
      "url": "https://www.apple.com/newsroom/2026/03/apple-introduces-iphone-17e/",
      "archive_url": "https://web.archive.org/web/20260706010651/https://www.apple.com/newsroom/2026/03/apple-introduces-iphone-17e/",
      "published": {
        "value": "2026-03-02",
        "precision": "day",
        "sortKey": "2026-03-02"
      },
      "publisher": "Apple",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "apple-iphone-4-announcement-2010",
      "schema_version": 2,
      "title": "Apple Presents iPhone 4",
      "url": "https://www.apple.com/newsroom/2010/06/07Apple-Presents-iPhone-4/",
      "archive_url": "https://web.archive.org/web/20260705203650/https://www.apple.com/newsroom/2010/06/07Apple-Presents-iPhone-4/",
      "published": {
        "value": "2010-06-07",
        "precision": "day",
        "sortKey": "2010-06-07"
      },
      "publisher": "Apple",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "apple-iphone-announcement-2007",
      "schema_version": 2,
      "title": "Apple Reinvents the Phone with iPhone",
      "url": "https://www.apple.com/newsroom/2007/01/09Apple-Reinvents-the-Phone-with-iPhone/",
      "archive_url": "https://web.archive.org/web/20260715233901/https://www.apple.com/newsroom/2007/01/09Apple-Reinvents-the-Phone-with-iPhone/",
      "published": {
        "value": "2007-01-09",
        "precision": "day",
        "sortKey": "2007-01-09"
      },
      "publisher": "Apple",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "apple-iphone-x-announcement-2017",
      "schema_version": 2,
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      "schema_version": 2,
      "title": "HTTP/3",
      "url": "https://datatracker.ietf.org/doc/html/rfc9114",
      "archive_url": "https://web.archive.org/web/20260714032017/https://datatracker.ietf.org/doc/html/rfc9114",
      "published": {
        "value": "2022-06",
        "precision": "month",
        "sortKey": "2022-06-01"
      },
      "publisher": "Internet Engineering Task Force",
      "authors": [
        "Mike Bishop"
      ],
      "type": "primary",
      "identifiers": {
        "rfc": 9114
      },
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    },
    {
      "id": "sony-corporate-report-2019",
      "schema_version": 2,
      "title": "Corporate Report 2019",
      "url": "https://www.sony.com/en/SonyInfo/IR/library/corporatereport/CorporateReport2019_E.pdf",
      "archive_url": "https://web.archive.org/web/20260705071433/https://www.sony.com/en/SonyInfo/IR/library/corporatereport/CorporateReport2019_E.pdf",
      "published": {
        "value": "2019-08-29",
        "precision": "day",
        "sortKey": "2019-08-29"
      },
      "publisher": "Sony Corporation",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    },
    {
      "id": "sony-gns-segment-meeting-2026",
      "schema_version": 2,
      "title": "Game & Network Services (G&NS) Segment Small Meeting Q&A (Summary)",
      "url": "https://www.sony.com/en/SonyInfo/IR/library/presen/business_segment_meeting/pdf/2026/GNS_QA_E.pdf",
      "archive_url": "https://web.archive.org/web/20260714192928/https://www.sony.com/en/SonyInfo/IR/library/presen/business_segment_meeting/pdf/2026/GNS_QA_E.pdf",
      "published": {
        "value": "2026-06-05",
        "precision": "day",
        "sortKey": "2026-06-05"
      },
      "publisher": "Sony Group Corporation",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "timbl-worldwideweb-browser",
      "schema_version": 2,
      "title": "The WorldWideWeb browser",
      "url": "https://www.w3.org/People/Berners-Lee/WorldWideWeb.html",
      "archive_url": "https://web.archive.org/web/20260714232852/https://www.w3.org/People/Berners-Lee/WorldWideWeb.html",
      "published": null,
      "publisher": "World Wide Web Consortium",
      "authors": [
        "Tim Berners-Lee"
      ],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "w3c-cern-httpd",
      "schema_version": 2,
      "title": "The CERN httpd",
      "url": "https://www.w3.org/Daemon/",
      "archive_url": "https://web.archive.org/web/20260623025507/https://www.w3.org/Daemon/",
      "published": {
        "value": "2018-05-07",
        "precision": "day",
        "sortKey": "2018-05-07"
      },
      "publisher": "World Wide Web Consortium",
      "authors": [
        "Ari Luotonen",
        "Henrik Frystyk Nielsen",
        "Tim Berners-Lee"
      ],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    },
    {
      "id": "w3c-http-09-original",
      "schema_version": 2,
      "title": "The Original HTTP as defined in 1991",
      "url": "https://www.w3.org/Protocols/HTTP/AsImplemented",
      "archive_url": "https://web.archive.org/web/20260513222233/https://www.w3.org/Protocols/HTTP/AsImplemented",
      "published": {
        "value": "1991",
        "precision": "year",
        "sortKey": "1991-01-01"
      },
      "publisher": "World Wide Web Consortium",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "w3c-web-history",
      "schema_version": 2,
      "title": "History",
      "url": "https://www.w3.org/about/history/",
      "archive_url": "https://web.archive.org/web/20260714145034/https://www.w3.org/about/history/",
      "published": null,
      "publisher": "World Wide Web Consortium",
      "authors": [],
      "type": "secondary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    },
    {
      "id": "whatwg-html-standard",
      "schema_version": 2,
      "title": "HTML Standard",
      "url": "https://html.spec.whatwg.org/multipage/",
      "archive_url": "https://web.archive.org/web/20260715210139/https://html.spec.whatwg.org/multipage/",
      "published": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "publisher": "WHATWG",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "whatwg-url-standard",
      "schema_version": 2,
      "title": "URL Standard",
      "url": "https://url.spec.whatwg.org/",
      "archive_url": "https://web.archive.org/web/20260716060610/https://url.spec.whatwg.org/",
      "published": {
        "value": "2026-07-06",
        "precision": "day",
        "sortKey": "2026-07-06"
      },
      "publisher": "WHATWG",
      "authors": [],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-17",
        "precision": "day",
        "sortKey": "2026-07-17"
      },
      "lang": "en"
    },
    {
      "id": "www-announcement-1991",
      "schema_version": 2,
      "title": "WorldWideWeb wide-area hypertext app available",
      "url": "https://www.w3.org/People/Berners-Lee/1991/08/art-6484.txt",
      "archive_url": "https://web.archive.org/web/20260710014454/https://www.w3.org/People/Berners-Lee/1991/08/art-6484.txt",
      "published": {
        "value": "1991-08-06",
        "precision": "day",
        "sortKey": "1991-08-06"
      },
      "publisher": "World Wide Web project",
      "authors": [
        "Tim Berners-Lee"
      ],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    },
    {
      "id": "www-proposal-1989",
      "schema_version": 2,
      "title": "Information Management — A Proposal",
      "url": "https://www.w3.org/History/1989/proposal.html",
      "archive_url": "https://web.archive.org/web/20260715211853/https://www.w3.org/History/1989/proposal.html",
      "published": {
        "value": "1989-03",
        "precision": "month",
        "sortKey": "1989-03-01"
      },
      "publisher": "CERN",
      "authors": [
        "Tim Berners-Lee"
      ],
      "type": "primary",
      "identifiers": {},
      "accessed": {
        "value": "2026-07-16",
        "precision": "day",
        "sortKey": "2026-07-16"
      },
      "lang": "en"
    }
  ],
  "collections": [
    {
      "id": "http-evolution",
      "schema_version": 2,
      "title": "Webの誕生からHTTP/3まで",
      "kind": "lineage",
      "items": [
        "world-wide-web-proposal-1989",
        "world-wide-web",
        "worldwideweb-browser-server-implemented-1990",
        "worldwideweb-browser",
        "http-09",
        "world-wide-web-announced-1991",
        "ncsa-mosaic-released-1993",
        "ncsa-mosaic",
        "http-10-rfc1945-1996",
        "http-10",
        "http-11-rfc2068-1997",
        "http-11",
        "spdy-announced-2009",
        "spdy",
        "http-2-rfc7540-2015",
        "http-2",
        "quic-rfc9000-2021",
        "quic",
        "http-3-rfc9114-2022",
        "http-3"
      ],
      "book_refs": [],
      "status": "published",
      "origin": "ai_assisted",
      "reviewed_by": "nekoruri",
      "body": "\nWebの提案と初期実装から、HTTP/0.9、HTTP/1.0、HTTP/1.1、SPDY、HTTP/2、QUIC、\nHTTP/3へ至る系譜を、日付を持つEventと継続的なEntityを行き来しながら辿る読み筋です。\n代表的な仕様公開と実装を選び、各詳細ページで日付粒度、技術間の関係、一次資料を確認できます。\n"
    }
  ],
  "topics": [
    {
      "id": "anchor",
      "label": {
        "ja": "対照アンカー",
        "en": "Reference anchor"
      },
      "aliases": [
        "世代",
        "personal timeline reference"
      ]
    },
    {
      "id": "browser",
      "label": {
        "ja": "ブラウザー",
        "en": "Browser"
      },
      "aliases": [
        "Web browser",
        "ウェブブラウザー"
      ]
    },
    {
      "id": "organization",
      "label": {
        "ja": "組織",
        "en": "Organization"
      },
      "aliases": [
        "Standards body"
      ]
    },
    {
      "id": "protocol",
      "label": {
        "ja": "プロトコル",
        "en": "Protocol"
      },
      "aliases": [
        "通信規約"
      ]
    },
    {
      "id": "web-standard",
      "label": {
        "ja": "Web標準",
        "en": "Web standard"
      },
      "aliases": [
        "Web standards"
      ]
    }
  ],
  "books": [],
  "relations": [
    {
      "source": "http-10",
      "type": "supersedes",
      "target": "http-09",
      "certainty": "supported",
      "note": "RFC 2068はHTTP/1.0を単純な初期プロトコルから改善された方式として説明する。",
      "evidence": [
        {
          "source": "rfc2068",
          "locator": {
            "type": "section",
            "value": "1.1 Purpose"
          }
        }
      ]
    },
    {
      "source": "http-11",
      "type": "supersedes",
      "target": "http-10",
      "certainty": "established",
      "note": "RFC 2068はHTTP/1.1をHTTP/1.0への更新として定義している。",
      "evidence": [
        {
          "source": "rfc2068",
          "locator": {
            "type": "section",
            "value": "1.1 Purpose"
          }
        }
      ]
    },
    {
      "source": "http-2",
      "type": "derived_from",
      "target": "spdy",
      "certainty": "established",
      "note": "IETFの公式発表はHTTP Working GroupがSPDYをHTTP/2の出発点に選んだと記録する。",
      "evidence": [
        {
          "source": "ietf-http2-approved",
          "locator": {
            "type": "heading",
            "value": "HTTP/2 Approved"
          }
        }
      ]
    },
    {
      "source": "http-2",
      "type": "motivated_by",
      "target": "http-11",
      "certainty": "supported",
      "note": "RFC 7540はHTTP/1.xで並列要求のために複数接続が必要となる制約を説明している。",
      "evidence": [
        {
          "source": "rfc7540",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        }
      ]
    },
    {
      "source": "http-3",
      "type": "enabled_by",
      "target": "quic",
      "certainty": "established",
      "note": "RFC 9114はHTTP/3をQUICトランスポート上のHTTP意味論の写像として定義する。",
      "evidence": [
        {
          "source": "rfc9114",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        }
      ]
    },
    {
      "source": "http-3",
      "type": "influenced_by",
      "target": "http-2",
      "certainty": "established",
      "note": "RFC 9114はHTTP/3がHTTP/2の設計を大幅に利用していると明記する。",
      "evidence": [
        {
          "source": "rfc9114",
          "locator": {
            "type": "section",
            "value": "1. Introduction"
          }
        }
      ]
    }
  ],
  "relationsByTarget": {
    "http-09": [
      {
        "source": "http-10",
        "type": "supersedes",
        "target": "http-09",
        "certainty": "supported",
        "note": "RFC 2068はHTTP/1.0を単純な初期プロトコルから改善された方式として説明する。",
        "evidence": [
          {
            "source": "rfc2068",
            "locator": {
              "type": "section",
              "value": "1.1 Purpose"
            }
          }
        ]
      }
    ],
    "http-10": [
      {
        "source": "http-11",
        "type": "supersedes",
        "target": "http-10",
        "certainty": "established",
        "note": "RFC 2068はHTTP/1.1をHTTP/1.0への更新として定義している。",
        "evidence": [
          {
            "source": "rfc2068",
            "locator": {
              "type": "section",
              "value": "1.1 Purpose"
            }
          }
        ]
      }
    ],
    "spdy": [
      {
        "source": "http-2",
        "type": "derived_from",
        "target": "spdy",
        "certainty": "established",
        "note": "IETFの公式発表はHTTP Working GroupがSPDYをHTTP/2の出発点に選んだと記録する。",
        "evidence": [
          {
            "source": "ietf-http2-approved",
            "locator": {
              "type": "heading",
              "value": "HTTP/2 Approved"
            }
          }
        ]
      }
    ],
    "http-11": [
      {
        "source": "http-2",
        "type": "motivated_by",
        "target": "http-11",
        "certainty": "supported",
        "note": "RFC 7540はHTTP/1.xで並列要求のために複数接続が必要となる制約を説明している。",
        "evidence": [
          {
            "source": "rfc7540",
            "locator": {
              "type": "section",
              "value": "1. Introduction"
            }
          }
        ]
      }
    ],
    "quic": [
      {
        "source": "http-3",
        "type": "enabled_by",
        "target": "quic",
        "certainty": "established",
        "note": "RFC 9114はHTTP/3をQUICトランスポート上のHTTP意味論の写像として定義する。",
        "evidence": [
          {
            "source": "rfc9114",
            "locator": {
              "type": "section",
              "value": "1. Introduction"
            }
          }
        ]
      }
    ],
    "http-2": [
      {
        "source": "http-3",
        "type": "influenced_by",
        "target": "http-2",
        "certainty": "established",
        "note": "RFC 9114はHTTP/3がHTTP/2の設計を大幅に利用していると明記する。",
        "evidence": [
          {
            "source": "rfc9114",
            "locator": {
              "type": "section",
              "value": "1. Introduction"
            }
          }
        ]
      }
    ]
  }
}
