{
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    "relation": "topic-surface-only",
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  "dek": "周二（8月25日），根据路透社对卫星图像的分析，在存在主权争议的南海西沙群岛，一座靠近羚羊礁（Antelope Reef）的小岛上出现了新的设施。分析人士认为，中国正在那里建设规模最大的军事基地。",
  "desk": "politics",
  "event_id": "event-112815af24e8b19f8bd25eb6",
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      "published_at": "2026-08-25T10:30:29Z",
      "role": "media",
      "source_id": "rfi-chinese",
      "source_name": "RFI",
      "title": "路透卫星图像分析：南海岛礁出现新建筑，中国正加速扩建南海军事设施",
      "url": "https://www.rfi.fr/cn/%E6%94%BF%E6%B2%BB/20260825-%E8%B7%AF%E9%80%8F%E5%8D%AB%E6%98%9F%E5%9B%BE%E5%83%8F%E5%88%86%E6%9E%90-%E5%8D%97%E6%B5%B7%E5%B2%9B%E7%A4%81%E5%87%BA%E7%8E%B0%E6%96%B0%E5%BB%BA%E7%AD%91%EF%BC%8C%E4%B8%AD%E5%9B%BD%E6%AD%A3%E5%8A%A0%E9%80%9F%E6%89%A9%E5%BB%BA%E5%8D%97%E6%B5%B7%E5%86%9B%E4%BA%8B%E8%AE%BE%E6%96%BD",
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  "headline": "路透卫星图像分析：南海岛礁出现新建筑，中国正加速扩建南海军事设施",
  "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."
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  "mutation": {
    "kind": "new",
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  "published_at": "2026-08-25T10:30:29Z",
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      "evidence_item_id": "item-9afdb2c3514fd14b14305d66",
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