{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/159304098"
      "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" : [ "The oligoglycerol esters for thickening oil-based drilling muds which are used according to the invention as thickeners are compounds which are known per se and can be obtained e.g. by acid- or base-catalyzed esterification directly from oligoglycerol with the particular fatty acids." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.es" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/460614110"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/159304098"] } } }
