{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/464850949"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/168489850" ] } },

    { "id" : "http://webisa.webdatacommons.org/168489850"
      "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" : [ "R3 is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a group of the formula: ##STR5## in which R4 is a hydrogen atom or methyl group." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.com" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/140673815"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/168489850"] } } }
