{
  "prefix": {
    "ex": "http://example.org/"
  },
  "used": {
    "ex:use1": [
      {
        "prov:activity": "ex:a1",
        "prov:time": "2014-06-23T12:28:52.647+01:00",
        "prov:entity": "ex:e1"
      },
      {
        "prov:activity": "ex:a1",
        "prov:time": "2012-12-03T21:08:16.686Z",
        "prov:entity": "ex:e1"
      }
    ]
  }
}