{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/363875863"
      "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" : [ "Strontium is a trace mineral whose metabolism is closely linked to that of calcium. (It resembles calcium at the molecular level.) Strontium concentrates in the skeletal system, where it plays a key role in supporting bone tissue density.90-92" ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "lef.org" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/24965167"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/363875863"] } } }
