{
  "declared_links": {
    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "民調一直預測民主黨將取得大勝，但由於選民最後一刻的決定以及抽樣抽樣問題，最終結果無法保證。",
  "desk": "politics",
  "event_id": "event-09c2621c81fb262c1d3c466b",
  "evidence_groups": [
    {
      "group_id": "bbc-chinese-editorial",
      "roles": [
        "media"
      ],
      "source_ids": [
        "bbc-chinese"
      ]
    }
  ],
  "evidence_refs": [
    {
      "independence_group": "bbc-chinese-editorial",
      "item_id": "item-f7106af2c2565f3d0714425d",
      "published_at": "2026-11-02T10:31:30Z",
      "role": "media",
      "source_id": "bbc-chinese",
      "source_name": "BBC News Chinese",
      "title": "美國中期選舉：民調顯示民主黨將取得勝利，但預測還準確嗎？",
      "url": "https://www.bbc.com/zhongwen/articles/cqy7l48vnv8ro/trad?at_campaign=rss&at_medium=RSS",
      "version_id": "itemv-443934eef163912c09925e82"
    }
  ],
  "evidence_strength": "single-source",
  "headline": "美國中期選舉：民調顯示民主黨將取得勝利，但預測還準確嗎？",
  "lead": false,
  "lead_reason": "Current single-source metadata is retained but not promoted as a 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": "unchanged",
    "previous_version_id": "eventv-4254782ba8f19f241769ee46"
  },
  "published_at": "2026-11-02T10:31:30Z",
  "reported_facts": [
    {
      "attribution": "BBC News Chinese",
      "evidence_item_id": "item-f7106af2c2565f3d0714425d",
      "published_at": "2026-11-02T10:31:30Z",
      "statement": "BBC News Chinese published “美國中期選舉：民調顯示民主黨將取得勝利，但預測還準確嗎？”."
    }
  ],
  "topics": [
    "politics",
    "rights"
  ],
  "updated_at": "2026-11-02T10:31:30Z",
  "url": "https://palimpsest.info/news/wire/event-09c2621c81fb262c1d3c466b/",
  "version_id": "eventv-4254782ba8f19f241769ee46"
}