{
  "declared_links": {
    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "北京时间8月22日，中国社会科学院考古研究所与秘鲁相关机构，在秘鲁苏佩，正式签署考古合作协议，将联合开展卡拉尔文明考古研究。",
  "desk": "politics",
  "event_id": "event-08ae92d8d1694a5b4a853c49",
  "evidence_groups": [
    {
      "group_id": "china-news-service-state-media",
      "roles": [
        "media"
      ],
      "source_ids": [
        "china-news-service-politics"
      ]
    }
  ],
  "evidence_refs": [
    {
      "independence_group": "china-news-service-state-media",
      "item_id": "item-3ea5cbb8b97fb496c39b122b",
      "published_at": "2026-08-21T22:52:32Z",
      "role": "media",
      "source_id": "china-news-service-politics",
      "source_name": "China News Service",
      "title": "中国考古机构首次赴南美洲开展联合考古",
      "url": "https://www.chinanews.com.cn/gn/2026/08-22/10682145.shtml",
      "version_id": "itemv-f2e512e902ae4e739d9ed720"
    }
  ],
  "evidence_strength": "single-source",
  "headline": "中国考古机构首次赴南美洲开展联合考古",
  "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": "2026-08-21T22:52:32Z",
  "reported_facts": [
    {
      "attribution": "China News Service",
      "evidence_item_id": "item-3ea5cbb8b97fb496c39b122b",
      "published_at": "2026-08-21T22:52:32Z",
      "statement": "China News Service published “中国考古机构首次赴南美洲开展联合考古”."
    }
  ],
  "topics": [
    "government",
    "measurement",
    "politics"
  ],
  "updated_at": "2026-08-21T22:52:32Z",
  "url": "https://palimpsest.info/news/wire/event-08ae92d8d1694a5b4a853c49/",
  "version_id": "eventv-387e2bee30295675d8f3ca3e"
}