{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/92425143"
      "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" : [ "Fentanyl is approximately 50 to 100 times more potent than morphine and 30 to 50 times more potent than heroin depending on the physiological or behavioral endpoints being measured, the route of administration, and other factors." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "federalregister.gov" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/159684274"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/92425143"] } } }
