{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-user-sunol-water-spigot-202609",
        "evidence_ids": [
          "evidence-user-sunol-water-spigot-202609"
        ],
        "predicate": "firsthand_facility_observation",
        "spatial_scope_ids": [
          "scope-sunol-backpack-camp"
        ],
        "subject_id": "water-ohlone-backpack-camp",
        "temporal_scope": null,
        "value": {
          "facility_type": "water spigot",
          "latitude": 37.5115678,
          "longitude": -121.7924162,
          "observed_period": "early September 2026",
          "observed_present_and_used": true,
          "official_availability_claim_id": "claim-ohlone-water-availability-20260919",
          "official_source_name": "Backpack Camp",
          "provenance_class": "user_firsthand_field_observation"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-user-sunol-water-spigot-202609",
          "evidence_id": "evidence-user-sunol-water-spigot-202609",
          "notes": "Firsthand user observation with a user-supplied coordinate pin; distinct from official EBRPD evidence.",
          "observation_id": "observation-user-sunol-water-spigot-202609",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "User firsthand trip report",
            "User-supplied Google Maps pin"
          ],
          "content": "The user reports personally using this water spigot during an Ohlone trip in early September 2026 and identifies it as the source EBRPD calls Backpack Camp in its Ohlone water-availability list. The supplied pin resolves to 37.5115678, -121.7924162. EBRPD independently reports Backpack Camp water available; the user observation supplies the physical pin. The date is intentionally retained as the user-provided approximate period rather than converted to an invented exact day.",
          "observation_id": "observation-user-sunol-water-spigot-202609",
          "observed_at": null,
          "observer": "User firsthand field observation, transcribed by Wayproof",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-google-maps-sunol-water-spigot"
        }
      ],
      "sources": [
        {
          "locator": "https://maps.app.goo.gl/Eec6BSzq7dsBbMQS7?g_st=ic",
          "publisher": "Google Maps (user-supplied field-observation pin)",
          "source_id": "source-google-maps-sunol-water-spigot"
        }
      ],
      "subject": {
        "entity_id": "water-ohlone-backpack-camp",
        "kind": "water_source",
        "name": "Backpack Camp"
      }
    }
  ],
  "entity": {
    "entity_id": "water-ohlone-backpack-camp",
    "kind": "water_source",
    "name": "Backpack Camp"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-ohlone-park-page",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/water-ohlone-backpack-camp.json",
      "reason": "Add the official Ohlone preserve page, resolve the 2026 permit change, and date volatile water status.",
      "record_id": "water-ohlone-backpack-camp",
      "record_type": "entity",
      "summary": "Ingest the official Ohlone preserve page, resolve the obsolete permit ambiguity, and preserve dated water availability."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ohlone-official-camping-sources",
      "evidence_refs": [
        "evidence-user-sunol-water-spigot-202609"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-user-sunol-water-spigot-202609.json",
      "reason": "Add user-supplied Google Maps site labels and firsthand Sunol facility observations without representing them as official coordinates.",
      "record_id": "claim-user-sunol-water-spigot-202609",
      "record_type": "claim",
      "summary": "Ingest official Ohlone camping sources, Google-labeled campsite coordinates, firsthand Backpack Camp spigot and pit-toilet observations, and source-specific Eagles Aerie/Eyrie naming; preserve provenance boundaries and unresolved authoritative-coordinate and measured-proximity gaps."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}