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740 Belmont Avenue West, Kitchener, Ontario, Canada

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information retrieval
finds documents containing 'information' or 'retrieval'
information and retrieval
finds documents containing both 'information' and 'retrieval'
information not retrieval
finds documents containing 'information' but not 'retrieval'
web*
finds documents containing words starting with 'web'
(information not retrieval) and WAIS
finds documents containing 'WAIS', plus 'information' but not 'retrieval'