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<Paper uid="W98-0702">
  <Title>I I I I I I I I I I I I I I I I I I I Disambiguating Verbs with the WordNet Category of the Direct Object</Title>
  <Section position="3" start_page="0" end_page="0" type="intro">
    <SectionTitle>
2 Aspect in Natural Language
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    <Paragraph position="0"> Aspectual classification is a key component of models that assess temporal constraints between clauses (Moens and Steedman, 1988; Hwang and Schubert, 1991; Dorr, 1992; Hitzeman et al., 1994). For example, stativity must be identified to detect temporal constraints between clauses connected with when.</Paragraph>
    <Paragraph position="1"> For example, in interpreting (I), (I) She had good strength when objectively tested.</Paragraph>
    <Paragraph position="2"> the following temporal relationship can hold between the have-state and the tear, event: have-strength i However, in interpreting (2),</Paragraph>
    <Paragraph position="4"> constraints on aspectual class.</Paragraph>
    <Paragraph position="5"> If a clause can occur:, then it is: with a temporal adverb event (e.g., then) in prvyrwsive - event with a duration in-PP c-lminated (e.g., in an hour) event in the perfect tense c, lm. event or state (2) She had a se/zure when. objectively tested. the temporal relationship is between two events, and can be different: have-seizure I I Certain temporal adjuncts and tenses are constrained by and contribute to the aspectual class of a clause (Vendler, 1967; Dowry, 1979). Tables 1 lists four e.x_ample linguistic constraints. Each entry in this table describes an aspectual marker and the constraints on the aspectual category of any clause that appears with that marker. For example, if a clause appears in the progressive tense, it must be an event, e.g.,  (3) He is prospering. (event), which contrasts with, (4) *You are resembling your mother. (state). As a second example, an event must be culminated to appear in the perfect tense, for example, (5) She had made an attempt. (culminated), which contrasts with, (6) *He had stared at me. (non-c-lminated)  Such constraints linguistically validate the aspectual hierarchy of semantic classes, provide semantic constraints for natural language generation and understanding, and provide guidelines for aspectual corpus analysis.</Paragraph>
  </Section>
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