{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-ohlone-trail-permit-not-required-2026",
        "evidence_ids": [
          "evidence-ohlone-trail-permit-not-required-2026",
          "evidence-ebrpd-sunol-ohlone-permit-not-required-2026"
        ],
        "predicate": "trail_permit_required",
        "spatial_scope_ids": [
          "scope-ohlone-wilderness-trail"
        ],
        "subject_id": "trail-ohlone-wilderness",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2026-01-01"
        },
        "value": false
      },
      "evidence": [
        {
          "claim_id": "claim-ohlone-trail-permit-not-required-2026",
          "evidence_id": "evidence-ohlone-trail-permit-not-required-2026",
          "notes": "",
          "observation_id": "observation-ebrpd-ohlone-permit-2026",
          "stance": "supports"
        },
        {
          "claim_id": "claim-ohlone-trail-permit-not-required-2026",
          "evidence_id": "evidence-ebrpd-sunol-ohlone-permit-not-required-2026",
          "notes": "The Sunol park page independently corroborates the Ohlone park page's effective-date statement.",
          "observation_id": "observation-ebrpd-sunol-ohlone-policy",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "As of 2026-01-01, an Ohlone trail permit is not required and no additional permits will be sold. An overnight backpacking reservation is still required.",
          "observation_id": "observation-ebrpd-ohlone-permit-2026",
          "observed_at": "2026-01-01T00:00:00+00:00",
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "artifact_refs": [
            "Ohlone Wilderness Trail"
          ],
          "content": "The page states that as of January 1, 2026 an Ohlone permit is not required and no additional permits will be sold. Overnight backpacking reservations remain required, and designated Ohlone Trail campsites require advance reservation two or more business days ahead.",
          "observation_id": "observation-ebrpd-sunol-ohlone-policy",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-sunol-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/ohlone",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ohlone-park-page"
        },
        {
          "locator": "https://www.ebparks.org/parks/sunol",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-sunol-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "trail-ohlone-wilderness",
      "kind": "trail",
      "name": "Ohlone Wilderness Trail"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-ohlone-park-page",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-ohlone-permit-2026.json",
      "reason": "Add the official Ohlone preserve page, resolve the 2026 permit change, and date volatile water status.",
      "record_id": "observation-ebrpd-ohlone-permit-2026",
      "record_type": "observation",
      "summary": "Ingest the official Ohlone preserve page, resolve the obsolete permit ambiguity, and preserve dated water availability."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-ohlone-trail",
    "position": 124,
    "previous_id": "observation-ebrpd-ohlone-identity",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "As of 2026-01-01, an Ohlone trail permit is not required and no additional permits will be sold. An overnight backpacking reservation is still required.",
      "observation_id": "observation-ebrpd-ohlone-permit-2026",
      "observed_at": "2026-01-01T00:00:00+00:00",
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-ohlone-park-page"
    }
  ],
  "record": {
    "artifact_refs": [],
    "content": "As of 2026-01-01, an Ohlone trail permit is not required and no additional permits will be sold. An overnight backpacking reservation is still required.",
    "observation_id": "observation-ebrpd-ohlone-permit-2026",
    "observed_at": "2026-01-01T00:00:00+00:00",
    "observer": "Wayproof source review",
    "retrieved_at": "2026-09-20T00:00:00+00:00",
    "source_id": "source-ebrpd-ohlone-park-page"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/ohlone",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-ohlone-park-page"
    }
  ]
}