{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://publicschema.org/land/LandBoundaryAssertion.schema.json",
  "title": "LandBoundaryAssertion",
  "description": "A statement of where the boundary of a land spatial unit lies and how far it is recognized or agreed, with its supporting evidence. Geometry alone does not establish legal agreement.",
  "type": "object",
  "properties": {
    "boundary_unit": {
      "oneOf": [
        {
          "$ref": "https://publicschema.org/land/LandSpatialUnit.schema.json"
        },
        {
          "type": "string",
          "description": "URI or identifier reference"
        }
      ],
      "description": "The spatial unit whose boundary is described."
    },
    "spatial_geometry": {
      "type": "array",
      "items": {
        "oneOf": [
          {
            "$ref": "https://publicschema.org/SpatialGeometry.schema.json"
          },
          {
            "type": "string",
            "description": "URI or identifier reference"
          }
        ],
        "description": "A geometric representation of the described resource. The type of that resource, not this property, says what the shape belongs to. It is separate from an address or a named administrative area."
      }
    },
    "boundary_recognition": {
      "$ref": "https://publicschema.org/CodedValue.schema.json",
      "description": "How far the asserted boundary is recognized or agreed, coded in a stated classification."
    },
    "evidence_assertions": {
      "type": "array",
      "items": {
        "oneOf": [
          {
            "$ref": "https://publicschema.org/EvidenceAssertion.schema.json"
          },
          {
            "type": "string",
            "description": "URI or identifier reference"
          }
        ],
        "description": "Statements identifying sources that support or contradict this statement."
      }
    },
    "recorded_at": {
      "type": "string",
      "format": "date-time",
      "description": "The date and time the statement or event was entered into its source record. It can differ from when the fact took effect."
    }
  }
}