{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "5.2-pageFirstImplemented.json",
  "assertionType": "may",
  "expectedResult": "valid",
  "onUnexpectedResult" : "passAndContinue",
  "errorMessage": "Annotation Page has no first key (i.e., in description of Collection included using partOf key).",
  "title": "Implements **Annotation Page _first_ key** (i.e., in description of Collection included using partOf key) with valid value - [model 5.1](https://www.w3.org/TR/annotation-model/#annotation-collection)",
  "type": "object",
  "properties":
  {
    "partOf":
           { "$ref": "collections.json#/definitions/firstFound" }
  },
  "required": [ "partOf" ]
}