{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/150489118"
      "properties" : {
        "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" : [ "http://www.w3.org/ns/prov#Entity" ] ,
        "http://www.w3.org/ns/prov#value" : [ "Of course, such a surface S may depend upon the rotational speed of the drill bit, the weight-on-bit, and other factors, such as the compressive strength of the subterranean formation." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.co.uk" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/481603253"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/150489118"] } } }
