{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/330439232"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/312762984" ] } },

    { "id" : "http://webisa.webdatacommons.org/312762984"
      "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 barrier layer is typically a material such as Ta or TaN, which are electrically conductive, present a migration barrier to copper, and act as an adhesion layer for the copper." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.com" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/140599665"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/312762984"] } } }
