{
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    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "美国海军采购中型无人水面载具(MUSV)计划迎来新的进展，美国最大的军用造船公司亨廷顿·英格尔斯工业27日在路易斯安那州举行仪式，庆祝其为美国海军建造“罗穆卢斯”（ROMULUS）无人水面艇取得重要进展。美国海军计划在2031年前在印太地区部署47艘中型无人水面舰艇（MUSV），应对中国舰队不断扩张造成的威胁。",
  "desk": "politics",
  "event_id": "event-35f578442b9bbcd41feabad9",
  "evidence_groups": [
    {
      "group_id": "voice-of-america-chinese-editorial",
      "roles": [
        "media"
      ],
      "source_ids": [
        "voa-chinese"
      ]
    }
  ],
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    {
      "independence_group": "voice-of-america-chinese-editorial",
      "item_id": "item-8dedc14e6a3d7d6778fd2ae6",
      "published_at": "2026-10-31T02:00:00Z",
      "role": "media",
      "source_id": "voa-chinese",
      "source_name": "Voice of America Chinese",
      "title": "美海军中型无人水面载具(MUSV)计划迎新进展",
      "url": "https://www.voachinese.com/a/us-navy-musv-progress-20261030/8217072.html",
      "version_id": "itemv-5bfe20f03dde3e93ac29a4b5"
    }
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  "evidence_strength": "single-source",
  "headline": "美海军中型无人水面载具(MUSV)计划迎新进展",
  "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-a408aae13c9b251b24077b1d"
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  "published_at": "2026-10-31T02:00:00Z",
  "reported_facts": [
    {
      "attribution": "Voice of America Chinese",
      "evidence_item_id": "item-8dedc14e6a3d7d6778fd2ae6",
      "published_at": "2026-10-31T02:00:00Z",
      "statement": "Voice of America Chinese published “美海军中型无人水面载具(MUSV)计划迎新进展”."
    }
  ],
  "topics": [
    "politics",
    "rights"
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  "updated_at": "2026-10-31T02:00:00Z",
  "url": "https://palimpsest.info/news/wire/event-35f578442b9bbcd41feabad9/",
  "version_id": "eventv-a408aae13c9b251b24077b1d"
}