{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/426191716"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/258769180" ] } },

    { "id" : "http://webisa.webdatacommons.org/258769180"
      "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" : [ "Preferably, the polyurethane is a foam and the reaction to produce the polyurethane is conducted in the presence of (IV) a blowing agent and (V) a silicone surfactant as additional starting materials." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.com" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/408694450"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/258769180"] } } }
