{
  "prefix": {
    "ex": "http://example.org/"
  },
  "wasInvalidatedBy": {
    "ex:inv3": {
      "prov:activity": "ex:a1",
      "prov:role": [
        {
          "$": "someRole",
          "type": "xsd:string"
        },
        {
          "$": "otherRole",
          "type": "xsd:string"
        }
      ],
      "prov:entity": "ex:e1"
    }
  }
}