{
  "declared_links": {
    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "一場災難性山洪和泥石流席捲了尼泊爾與中國西藏交界的邊境地區，吞噬了城鎮、沖毀了橋梁，並導致兩地數百人死亡。BBC Verify利用已核實的影片和衛星圖像，追蹤這場致命山洪的發展路徑。",
  "desk": "politics",
  "event_id": "event-2661149b779085813b84f0d1",
  "evidence_groups": [
    {
      "group_id": "bbc-chinese-editorial",
      "roles": [
        "media"
      ],
      "source_ids": [
        "bbc-chinese"
      ]
    }
  ],
  "evidence_refs": [
    {
      "independence_group": "bbc-chinese-editorial",
      "item_id": "item-02caf7144b51f558ea2333bf",
      "published_at": "2026-08-28T08:14:57Z",
      "role": "media",
      "source_id": "bbc-chinese",
      "source_name": "BBC News Chinese",
      "title": "追溯西藏尼泊爾致命山洪如何發生",
      "url": "https://www.bbc.com/zhongwen/articles/c980e6r9jzgo/trad?at_campaign=rss&at_medium=RSS",
      "version_id": "itemv-0cf1e9a3a1b395fb8e36f410"
    }
  ],
  "evidence_strength": "single-source",
  "headline": "追溯西藏尼泊爾致命山洪如何發生",
  "lead": false,
  "lead_reason": "All contributing source receipts are stale; the attributed dossier is retained but cannot lead.",
  "limitations": [
    "Palimpsest retained only feed title, canonical link, time, and a bounded plain-text excerpt; it did not fetch the article body.",
    "The evidence-strength label describes source structure, not truth, intent, impact, or causation.",
    "Declared instrument links are topical pointers until a separate scan or economic observation is joined by time and method.",
    "Title-similarity clustering can miss differently worded or cross-language accounts and can join closely worded updates.",
    "This dossier currently contains one independent evidence group and remains explicitly attributed."
  ],
  "mutation": {
    "kind": "new",
    "previous_version_id": null
  },
  "published_at": "2026-08-28T08:14:57Z",
  "reported_facts": [
    {
      "attribution": "BBC News Chinese",
      "evidence_item_id": "item-02caf7144b51f558ea2333bf",
      "published_at": "2026-08-28T08:14:57Z",
      "statement": "BBC News Chinese published “追溯西藏尼泊爾致命山洪如何發生”."
    }
  ],
  "topics": [
    "politics",
    "rights"
  ],
  "updated_at": "2026-08-28T08:14:57Z",
  "url": "https://palimpsest.info/news/wire/event-2661149b779085813b84f0d1/",
  "version_id": "eventv-a35037611d908e6af1c73bcd"
}