{ "items" : [
    { "id" : "http://webisa.webdatacommons.org/273822556"
      "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" : [ "Specific examples of materials are synthetic rubber, natural rubber, spring steel and carbon fiber. [0006] In another aspect, the invention includes a method of exercise including providing a device as previously disclosed and positioning a user's lumbar vertebrae adjacent to the back pad." ] ,
        "http://www.w3.org/ns/prov#wasQuotedFrom" : [ "freepatentsonline.com" ] } },

    { "id" : "http://webisa.webdatacommons.org/prov/104578974"
      "properties" : {
        "http://www.w3.org/ns/prov#wasDerivedFrom" : [ "http://webisa.webdatacommons.org/273822556"] } } }
