{
  "fact_key": "airline:ua|fleet.total_mainline",
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    {
      "fact_version_id": 44136,
      "fact_key": "airline:ua|fleet.total_mainline",
      "identity": null,
      "subject": "airline:ua",
      "predicate": "fleet.total_mainline",
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      },
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      "valid_from_bounds": null,
      "valid_to": "9999-12-31T00:00:00Z",
      "recorded_at": "2026-09-03T20:11:59.861Z",
      "superseded_at": "9999-12-31T00:00:00Z",
      "status": "accepted",
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      "single_source": true,
      "decided_by": "vote:v1",
      "last_verified_at": "2026-09-11T01:37:00.000Z",
      "next_check_at": "2026-09-14T11:25:03.000Z",
      "stale": false,
      "origin": "observed",
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      "retraction_reason": null
    }
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}