{
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    "relation": "topic-surface-only",
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  "dek": "美国战争部星期五(8月7日)公布了第五批不明异常现象的解密文件，包括一份联邦调查局的报告，记录了今年一名美国政府特工拍摄到的两个黑色物体，一支特种作战空勤队的机组人员报告在阿曼湾上空发现了大约25个“冷球体”，以及1953年海军一项照片分析得出结论，即在美国西部拍摄到的物体展现出“不为人知”的速度和力量。",
  "desk": "politics",
  "event_id": "event-e507413f24ec2308f782d1a7",
  "evidence_groups": [
    {
      "group_id": "voice-of-america-chinese-editorial",
      "roles": [
        "media"
      ],
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        "voa-chinese"
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    {
      "independence_group": "voice-of-america-chinese-editorial",
      "item_id": "item-a3a6032f300c496b140f23b3",
      "published_at": "2026-08-07T22:17:31Z",
      "role": "media",
      "source_id": "voa-chinese",
      "source_name": "Voice of America Chinese",
      "title": "五角大楼最新UFO文件详细描述了阿富汗基地上空的无声三角形和阿曼湾上空的“冷球体”",
      "url": "https://www.voachinese.com/a/new-pentagon-ufo-files-detail-silent-triangle-over-afghan-base-cold-orbs-over-gulf-of-oman-20260807/8183931.html",
      "version_id": "itemv-db182132b2655c25fcf7a3a7"
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  "evidence_strength": "single-source",
  "headline": "五角大楼最新UFO文件详细描述了阿富汗基地上空的无声三角形和阿曼湾上空的“冷球体”",
  "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": "unchanged",
    "previous_version_id": "eventv-0ec6e59193d608be2984ee86"
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  "published_at": "2026-08-07T22:17:31Z",
  "reported_facts": [
    {
      "attribution": "Voice of America Chinese",
      "evidence_item_id": "item-a3a6032f300c496b140f23b3",
      "published_at": "2026-08-07T22:17:31Z",
      "statement": "Voice of America Chinese published “五角大楼最新UFO文件详细描述了阿富汗基地上空的无声三角形和阿曼湾上空的“冷球体””."
    }
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  "topics": [
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    "rights"
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  "updated_at": "2026-08-07T22:17:31Z",
  "url": "https://palimpsest.info/news/wire/event-e507413f24ec2308f782d1a7/",
  "version_id": "eventv-0ec6e59193d608be2984ee86"
}