{
  "entity": {
    "ex:e1": [
      {
        "prov:type": {
          "$": "ex:test1",
          "type": "xsd:QName"
        }
      },
      {
        "prov:type": {
          "$": "ex:test2",
          "type": "xsd:QName"
        }
      }
    ]
  },
  "prefix": {
    "ex": "http://example.org/"
  },
  "activity": {
    "ex:a1": {}
  }
}