{
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    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "兩國都在加碼人工智能，但美國追求下一個技術突破，中國更重視低成本普及。兩條不同路線，誰更可能建立長期優勢？",
  "desk": "technology",
  "event_id": "event-3f3aa28c496d8b4ffbe74f93",
  "evidence_groups": [
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      "group_id": "bbc-chinese-editorial",
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      "published_at": "2026-08-18T00:01:37Z",
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      "title": "中美「AI 軍備競賽」究竟在比什麼？專家預測三種結局",
      "url": "https://www.bbc.com/zhongwen/articles/cn5n9kqd5vvo/trad?at_campaign=rss&at_medium=RSS",
      "version_id": "itemv-c3f17a7907cc54574b837932"
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  "headline": "中美「AI 軍備競賽」究竟在比什麼？專家預測三種結局",
  "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."
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  "mutation": {
    "kind": "unchanged",
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  "url": "https://palimpsest.info/news/wire/event-3f3aa28c496d8b4ffbe74f93/",
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}