{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "schema:DataFeed",
  "title": "DataFeed",
  "description": "A single feed providing structured information about one or more entities or topics.",
  "type": "object",
  "allOf": [
    {
      "description": "A body of structured information describing some topic(s) of interest.",
      "$ref": "schema:Dataset"
    }
  ],
  "properties": {
    "dataFeedElement": {
      "description": "An item within a data feed. Data feeds may have many elements.",
      "oneOf": [
        {
          "anyOf": [
            { "type": "string" },
            { "$ref": "schema:DataFeedItem" },
            { "$ref": "schema:Thing" }
          ]
        },
        {
          "type": "array",
          "items": {
            "anyOf": [
              { "type": "string" },
              { "$ref": "schema:DataFeedItem" },
              { "$ref": "schema:Thing" }
            ]
          }
        }
      ]
    }
  }
}