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<Paper uid="W06-1512">
  <Title>Semantic Interpretation of Unrealized Syntactic Material in LTAG</Title>
  <Section position="9" start_page="95" end_page="95" type="concl">
    <SectionTitle>
7 Antecedent Contained Deletion(ACD)
</SectionTitle>
    <Paragraph position="0"> Further evidence for the proposed analysis comes from sentences with ACD, discussed in Sag 1980, Egg and Erk 2001, Asher et al 2001, Jacobson (to appear), and illustrated in (13): (13) John wants Mary to read every book Bill does.</Paragraph>
    <Paragraph position="1"> The elided material in this sentence is understood as either &amp;quot;Bill reads&amp;quot; or &amp;quot;Bill wants Mary to read&amp;quot;. Given that 'want' and 'every' can take different scope, four possible readings are expected. However, puzzling in this case is the unavailability of one of these readings: *John wants that for every book that Bill wants Mary to read, she reads it. Let us consider the final interpretation of this sentence: The non-lexicalized S tree introduces a proposition l3 and variables C and v3. These variables can be unified with either S features of the 'read'-tree (i.e. C1 and v), or S features of the 'want'-tree (i.e. C2 and v0). In the first case, the small ellipsis interpretation is derived, and both scope readings are available: C = C1, v3 = v</Paragraph>
    <Paragraph position="3"> If C and v3 are unified with S features of the 'want'-tree, then the large ellipsis interpretation</Paragraph>
    <Paragraph position="5"> l0: want(r, read(x, y)), l3: want(z, read(x, y)) The reading where every &gt;&gt; want is derived by the following constraints: N5-&gt; l0, C1-&gt; l1, R5 -&gt;l8 l5: every(y, book(y) &amp; want(z, read(x,y)), want(r, read(x, y)) l3  The fourth possible reading, where want &gt;&gt; every, however, is predicted to be unavailable under the present assumptions. This reading, want(r, every(y, book(y) &amp; want(z, read(x, y)), read(x, y)), cannot be derived, since it requires the proposition l3 to be 'inserted' within the proposition l0.</Paragraph>
  </Section>
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