{
  "declared_links": {
    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "河北“甲醛白菜”事件引发食品安全担忧。类似做法早在2012年就曾被报道。14年后，为何再次出现？",
  "desk": "politics",
  "event_id": "event-54bc10db67cdc6a55a1ace97",
  "evidence_groups": [
    {
      "group_id": "radio-free-asia-mandarin",
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        "media"
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        "rfa-mandarin"
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      "independence_group": "radio-free-asia-mandarin",
      "item_id": "item-715b9db51b3964817b04b7bb",
      "published_at": "2026-08-28T14:36:57Z",
      "role": "media",
      "source_id": "rfa-mandarin",
      "source_name": "Radio Free Asia Mandarin",
      "title": "“甲醛白菜”十四年后再现：食品安全为何还要靠曝光？",
      "url": "https://rfa.org/mandarin/xinwenkuaixun/2026/08/28/formaldehyde-cabbage-food-safety/",
      "version_id": "itemv-8e392829204dac742c955948"
    }
  ],
  "evidence_strength": "single-source",
  "headline": "“甲醛白菜”十四年后再现：食品安全为何还要靠曝光？",
  "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": "2026-08-28T14:36:57Z",
  "reported_facts": [
    {
      "attribution": "Radio Free Asia Mandarin",
      "evidence_item_id": "item-715b9db51b3964817b04b7bb",
      "published_at": "2026-08-28T14:36:57Z",
      "statement": "Radio Free Asia Mandarin published ““甲醛白菜”十四年后再现：食品安全为何还要靠曝光？”."
    }
  ],
  "topics": [
    "politics",
    "rights"
  ],
  "updated_at": "2026-08-28T14:36:57Z",
  "url": "https://palimpsest.info/news/wire/event-54bc10db67cdc6a55a1ace97/",
  "version_id": "eventv-e751232bf90d793ea9ad3d8b"
}