{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-user-ohlone-stromer-spring-water-20260905",
        "evidence_ids": [
          "evidence-user-ohlone-stromer-spring-water-20260905"
        ],
        "predicate": "firsthand_facility_observation",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "water-ohlone-stromer-springs",
        "temporal_scope": {
          "ends_on": "2026-09-05",
          "starts_on": "2026-09-05"
        },
        "value": {
          "facility_type": "water source",
          "latitude": 37.5628719,
          "longitude": -121.7049534,
          "observed_present": true,
          "provenance_class": "user_firsthand_field_observation",
          "route_segment": "Del Valle to Backpack Camp"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-user-ohlone-stromer-spring-water-20260905",
          "evidence_id": "evidence-user-ohlone-stromer-spring-water-20260905",
          "notes": "Firsthand dated field observation with user-supplied coordinate pin; distinct from official EBRPD availability evidence.",
          "observation_id": "observation-user-ohlone-stromer-spring-water-20260905",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "User firsthand trip report",
            "User-supplied Google Maps pin"
          ],
          "content": "The user reports personally observing the water source at Stromer Spring water on 2026-09-05 while traveling Del Valle to Backpack Camp. The supplied pin resolves to 37.5628719, -121.7049534.",
          "observation_id": "observation-user-ohlone-stromer-spring-water-20260905",
          "observed_at": "2026-09-05T00:00:00+00:00",
          "observer": "User firsthand field observation, transcribed by Wayproof",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-google-maps-ohlone-stromer-spring-water"
        }
      ],
      "sources": [
        {
          "locator": "https://maps.app.goo.gl/5612kzH6g3j7epgN7?g_st=ic",
          "publisher": "Google Maps (user-supplied firsthand-observation pin)",
          "source_id": "source-google-maps-ohlone-stromer-spring-water"
        }
      ],
      "subject": {
        "entity_id": "water-ohlone-stromer-springs",
        "kind": "water_source",
        "name": "Stromer Springs"
      }
    }
  ],
  "entity": {
    "entity_id": "water-ohlone-stromer-springs",
    "kind": "water_source",
    "name": "Stromer Springs"
  },
  "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-stromer-springs.json",
      "reason": "Add the official Ohlone preserve page, resolve the 2026 permit change, and date volatile water status.",
      "record_id": "water-ohlone-stromer-springs",
      "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-corridor-map-locations",
      "evidence_refs": [
        "evidence-user-ohlone-stromer-spring-water-20260905"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-user-ohlone-stromer-spring-water-20260905.json",
      "reason": "Capture user-supplied Google Maps locations and dated firsthand Ohlone corridor facility observations with explicit provenance.",
      "record_id": "claim-user-ohlone-stromer-spring-water-20260905",
      "record_type": "claim",
      "summary": "Capture six Google Maps labeled Ohlone corridor places plus dated September 5-6, 2026 firsthand water and restroom observations from the user's Del Valle-to-Mission Peak trip."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}