{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/27302133"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/291104882" ] } },

    { "id" : "http://webisa.webdatacommons.org/291104882"
      "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" : [ "In 1939, the sales value of gypsum products was approximately $42,000,000, of which $23,000,000 was accounted for by gypsum board (plasterboard, lath, and wallboard), $17,000,000 by gypsum plaster and the remainder by gypsum block and tile and other products." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "openjurist.org" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/7951022"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/291104882"] } } }
