{
  "type": "object",
  "additionalProperties": false,
  "required": ["candidates"],
  "properties": {
    "candidates": {
      "type": "array",
      "items": {
        "type": "object",
        "additionalProperties": false,
        "required": ["surface_form", "source_anchor", "source_quote",
                     "owner_type", "why_candidate", "planned_occurrences"],
        "properties": {
          "surface_form": {"type": "string"},
          "source_anchor": {"type": "string"},
          "source_quote": {"type": "string"},
          "owner_type": {"type": "string",
                         "enum": ["prop", "character", "location", "outlook"]},
          "why_candidate": {"type": "string"},
          "planned_occurrences": {"type": "integer", "minimum": 1}
        }
      }
    }
  }
}