{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/prov/455805315"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/299044661" ] } },

    { "id" : "http://webisa.webdatacommons.org/299044661"
      "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" : [ "Healing a River, The Potomac: 1940-1990, September 1991, 24 pp. $2.50 available from ICPRB Maps, slides, films, and other materials are available from the ICPRB. Extended Metadata Properties" ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "nasa.gov"] } } }
