{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-user-sunol-pit-toilet-202609",
        "evidence_ids": [
          "evidence-user-sunol-pit-toilet-202609"
        ],
        "predicate": "firsthand_facility_observation",
        "spatial_scope_ids": [
          "scope-sunol-backpack-camp"
        ],
        "subject_id": "facility-sunol-backpack-pit-toilet",
        "temporal_scope": null,
        "value": {
          "facility_type": "pit toilet",
          "latitude": 37.5122487,
          "longitude": -121.7929973,
          "observed_period": "early September 2026",
          "observed_present": true,
          "provenance_class": "user_firsthand_field_observation"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-user-sunol-pit-toilet-202609",
          "evidence_id": "evidence-user-sunol-pit-toilet-202609",
          "notes": "Firsthand user observation with a user-supplied coordinate pin; distinct from official EBRPD evidence.",
          "observation_id": "observation-user-sunol-pit-toilet-202609",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "User firsthand trip report",
            "User-supplied Google Maps pin"
          ],
          "content": "The user reports personally observing the restroom as a pit toilet during an Ohlone trip in early September 2026. The supplied pin resolves to 37.5122487, -121.7929973. The date is intentionally retained as the user-provided approximate period rather than converted to an invented exact day.",
          "observation_id": "observation-user-sunol-pit-toilet-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-pit-toilet"
        }
      ],
      "sources": [
        {
          "locator": "https://maps.app.goo.gl/RgTjZuVJ9Kc56Q6MA?g_st=ic",
          "publisher": "Google Maps (user-supplied field-observation pin)",
          "source_id": "source-google-maps-sunol-pit-toilet"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "facility-sunol-backpack-pit-toilet",
      "kind": "restroom",
      "name": "Sunol Backpack Camp pit toilet"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ohlone-official-camping-sources",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-google-maps-sunol-pit-toilet.json",
      "reason": "Add user-supplied Google Maps site labels and firsthand Sunol facility observations without representing them as official coordinates.",
      "record_id": "source-google-maps-sunol-pit-toilet",
      "record_type": "source",
      "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."
    }
  ],
  "navigation": {
    "next_id": "source-google-maps-sunol-sky-camp",
    "position": 187,
    "previous_id": "source-google-maps-sunol-oak-view",
    "total": 587
  },
  "observations": [
    {
      "artifact_refs": [
        "User firsthand trip report",
        "User-supplied Google Maps pin"
      ],
      "content": "The user reports personally observing the restroom as a pit toilet during an Ohlone trip in early September 2026. The supplied pin resolves to 37.5122487, -121.7929973. The date is intentionally retained as the user-provided approximate period rather than converted to an invented exact day.",
      "observation_id": "observation-user-sunol-pit-toilet-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-pit-toilet"
    }
  ],
  "record": {
    "locator": "https://maps.app.goo.gl/RgTjZuVJ9Kc56Q6MA?g_st=ic",
    "publisher": "Google Maps (user-supplied field-observation pin)",
    "source_id": "source-google-maps-sunol-pit-toilet"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://maps.app.goo.gl/RgTjZuVJ9Kc56Q6MA?g_st=ic",
      "publisher": "Google Maps (user-supplied field-observation pin)",
      "source_id": "source-google-maps-sunol-pit-toilet"
    }
  ]
}