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<http://webisa.webdatacommons.org/331225253>	<http://www.w3.org/ns/prov#value>	"ues and apparatus for entertainment sites, amusement parks and other information and/or entertainment dispensing sitesUS6364765Jul 1, 1998Apr 2, 2002Walker Digital, LlcElectronic amusement device offering secondary game of chance and method for operating sameUS6441752Dec 30, 2000Aug 27, 2002Mundi FomukongMethod and apparatus for locating mobile units tracking another or within a prescribed geograp" .