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<Paper uid="W04-2505">
  <Title>Intentions, Implicatures and Processing of Complex Questions</Title>
  <Section position="7" start_page="0" end_page="0" type="concl">
    <SectionTitle>
6 Conclusions
</SectionTitle>
    <Paragraph position="0"> In this paper we have described the problem of interpreting the question intentions and proposed two methods of generating the intentional structure of questions. The first method is based on lexico-semantic chains between concepts that are related to the question. The second method generates intentional structures by using the predicate-argument structures of questions and the topic representation of questions. To derive both forms of intentional structures, we have relied on information available from WordNet and on the parsing of questions and answers in predicate-argument structures. Our experiments show that the intentional structure may determine a different interpretation of the question, and thus different keywords can be used to retrieve the answers. Answer extraction also depends on the semantic relations between the coerced interpretations of predicates and arguments. By selecting a set of 100 questions for test, we have evaluated the correctness of the extracted answers when (1) no intentional knowledge was coerced; (2) implicatures were derived from lexico-semantic knowledge and (3) intentional structures were derived based on predicate-argument structures. An increase of 8structures and one of 22the impact of each element of the intentional structure on the Q/A processing.</Paragraph>
  </Section>
class="xml-element"></Paper>