{
    "$schema": "http://json-schema.org/draft-04/schema#",
    "id": "3.3.7-targCanonical.json",
    "assertionType": "may",
    "expectedResult": "valid",
    "onUnexpectedResult" : "passAndContinue",
    "errorMessage": "The description of a target rresource may include canonical key with a single value that is of format uri.",
    "title": "Implements **target _canonical_ key** with a **single value** that is of **format uri** [model 3.3.7](https://www.w3.org/TR/annotation-model/#bodies-and-targets)",
    "description": "True when Annotation includes one or more targets, one or more of which include canonical key with a single value of format uri. (Section 3.3.7)",
    "type": "object",
    "properties":
    {
        "target":
        {
           "oneOf": [
                      { "anyOf": [
                        { "$ref": "otherProperties.json#/definitions/canonicalPropertyFound" },
                        { "$ref": "otherProperties.json#/definitions/itemCanonicalPropertyFound" },
                        { "$ref": "otherProperties.json#/definitions/sourceCanonicalPropertyFound" }
                        ]
                      },
                       { "not":
                         { "items":
                            { "not":
                               { "anyOf": [
                                  { "$ref": "otherProperties.json#/definitions/canonicalPropertyFound" },
                                  { "$ref": "otherProperties.json#/definitions/itemCanonicalPropertyFound" },
                                  { "$ref": "otherProperties.json#/definitions/sourceCanonicalPropertyFound" }
                                 ]
                               }
                             }
                         }
                       }
                     ]
         }
     },
     "required": [ "target" ]
}