{ "items" : [
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        "http://www.w3.org/ns/prov#value" : [ "Another embodiment of the invention is directed to a portable, study aid apparatus for use in a system including the portable, study aid apparatus and a printed textbook, the portable, study aid apparatus comprising: a) a housing; b) a processor in the housing; c) an audio device for providing supplemental information associated with the printed textbook to the user in audio form, wherein the audi" ] ,
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    { "id" : "http://webisa.webdatacommons.org/prov/61092900"
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