{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/318894698"
      "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" : [ "A diphosphonic acid of the formula (VI): ##STR19## where R' is a monovalent organic radical, preferably a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms such as propyl, isopropyl, butyl, hexyl or 2-hydroxyethyl, can be prepared from a primary amine." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.com.au" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/492670956"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/318894698"] } } }
