{
  "declared_links": {
    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "近日，中國河北省被揭發收購商為達到保鮮效果，將大白菜蘸取工業甲醛，再裝車運輸到外地，事件引發官方及輿論高度關注。",
  "desk": "politics",
  "event_id": "event-45377718d19c8a2db52aa38e",
  "evidence_groups": [
    {
      "group_id": "bbc-chinese-editorial",
      "roles": [
        "media"
      ],
      "source_ids": [
        "bbc-chinese"
      ]
    }
  ],
  "evidence_refs": [
    {
      "independence_group": "bbc-chinese-editorial",
      "item_id": "item-06d0510c04bcae653b785d4b",
      "published_at": "2026-08-26T11:07:16Z",
      "role": "media",
      "source_id": "bbc-chinese",
      "source_name": "BBC News Chinese",
      "title": "「甲醛白菜」再現中國：食品安全監管的盲區在哪裡？",
      "url": "https://www.bbc.com/zhongwen/articles/ce3rz7xxr04o/trad?at_campaign=rss&at_medium=RSS",
      "version_id": "itemv-fcd396fc38f8165f8961c707"
    }
  ],
  "evidence_strength": "single-source",
  "headline": "「甲醛白菜」再現中國：食品安全監管的盲區在哪裡？",
  "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": "new",
    "previous_version_id": null
  },
  "published_at": "2026-08-26T11:07:16Z",
  "reported_facts": [
    {
      "attribution": "BBC News Chinese",
      "evidence_item_id": "item-06d0510c04bcae653b785d4b",
      "published_at": "2026-08-26T11:07:16Z",
      "statement": "BBC News Chinese published “「甲醛白菜」再現中國：食品安全監管的盲區在哪裡？”."
    }
  ],
  "topics": [
    "government",
    "politics",
    "rights"
  ],
  "updated_at": "2026-08-26T11:07:16Z",
  "url": "https://palimpsest.info/news/wire/event-45377718d19c8a2db52aa38e/",
  "version_id": "eventv-86099ad12c3651f92aed565c"
}