{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/193256506"
      "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 present invention relates generally, as is indicated, to optical displays, and more particularly, to head mounted displays and an optical system therefor using conjugate optics, for example, including a retro-reflector, and to a method of displaying an image." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "google.ca" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/30686494"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/193256506"] } } }
