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<Paper uid="C94-2149">
  <Title>XTAG System - A Wide Coverage Grammar for English</Title>
  <Section position="2" start_page="0" end_page="0" type="intro">
    <SectionTitle>
1 INTRODUCTION
</SectionTitle>
    <Paragraph position="0"> XTAG is a large on-going project to develop a wide-coverage grammar for English, based on the l,exicalized Tree Adjoining Grammar (I 3&amp;quot;AG) tbrmalism.</Paragraph>
    <Paragraph position="1"> LTAG is a lexicalized mildly-context sensitive tree rewriting system \[Joshi et al., 1975; Schabes, 1990\] that is closely related to Dependency Grammars and Categorial Grammars. Elementary trees in 13~AG provicle a larger domain of locality over which syntactic and semantic (predicate-argument) constraints are specified. XTAG also serves as an LTAG grammar development system consisting of a predictive left-to-right parser, an X-window interface, a roof phological analyzer, and a part-of-speech tagger (also referred to as simply 'tagger').</Paragraph>
  </Section>
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