{
  "wasAssociatedWith": {
    "ex:ass_r14": {
      "prov:activity": "ex:a1",
      "prov:agent": "ex:ag1",
      "prov:role": {
        "$": "10",
        "type": "xsd:integer"
      }
    }
  },
  "prefix": {
    "ex": "http://example.org/"
  }
}