call_log.json

{
  "@context": {
    "@vocab": "http://case.example.org/core#",
    "olo": "http://purl.org/ontology/olo/core#"
  },
  "@graph": [
    {
      "@id": "phone_account1",
      "@type": "Trace",
      "propertyBundle": [
        {
          "@type": "Account",
          "accountIssuer": "AT&T",
          "isActive": true
        },
        {
          "@type": "PhoneAccount",
          "phoneNumber": "1237771337"
        }
      ]
    },
    {
      "@id": "phone_account2",
      "@type": "Trace",
      "propertyBundle": [
        {
          "@type": "Account",
          "accountIssuer": "Sprint",
          "isActive": true
        },
        {
          "@type": "PhoneAccount",
          "identifier": "1234560000"
        }
      ]
    },
    {
      "@id": "phone_call1",
      "@type": "Trace",
      "propertyBundle": [
        {
          "@type": "PhoneCall",
          "callType": "mobile",
          "startTime": "2010-01-15T17:59:43.25Z",
          "endTime": "2010-01-15T18:30:41.25Z",
          "from": "phone_account1",
          "to": "phone_account2",
          "duration": "PT31M2S"
        }
      ]
    }
  ]
}