Magic sets and other strange ways to implement logic programs (extended abstract)
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The use of Generalized Quantifiers in query languages wasintroduced independently in (Hsu and Parker, 1995; Gyssens et al., 1995).In both cases it is argued that GQs make query languages more able to handle complex queries in a declarative way and provide a syntax more similar tonatural language. In this paper we argue that query languages withGeneralized Quantifiers can be used to produce cooperative questionanswering (Gaasterland et al., 1992). We introduce the Query Languagewith Generalized Quantifiers QLGQ and review related work incooperative query answering, focusing on research that has directconnections with the results of this paper. Then we show how to useGeneralized Quantifiers in dealing with false presuppositions,constructing justifications, and query relaxation. For each technique,we give examples that suggest that Generalized Quantifiers are bettersuited to the application of the technique than traditional approaches.