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An Entity of Type : prov:Entity, within Data Space : webisadb.webdatacommons.org associated with source dataset(s)

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  • ting systemUS642706322 May 199730 Jul 2002Finali CorporationAgent based instruction system and methodUS6435879 *4 May 199920 Aug 2002Andreas UnsickerMethod and device for checking the correctness of answers to quiz questions over the media and in events, especially television and radioUS6505031 *25 Feb 20007 Jan 2003Robert SliderSystem and method for providing a virtual school environmentUS6513042
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