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<Paper uid="C88-2086">
  <Title>Solving Some Persistent Presupposition tProblems</Title>
  <Section position="2" start_page="0" end_page="0" type="intro">
    <SectionTitle>
1 Introduction
</SectionTitle>
    <Paragraph position="0"> /Soames 1979/ provides some intriguing counterexamples to the method for deriving natural language presuppositions presented in /Gazdar 1979/. A proposed modification to Gazdar~s method (/Landman 1981/) which attempts to solve the problem exhibited by these couuterexamples by introducing extra clausal implieatures &amp;quot;has been effectively argued against in/Soames 1982/.</Paragraph>
    <Paragraph position="1"> Motivated by the lack of explanation for these reasonably simple counterexamples, /Soames 1982/ constructs a mechanism that derives presuppositions that is a superset of the approaches suggested by/Gazdax 1979/and/Karttunen and Peters 1979/. /Mercer 1987/ contains methodological and empirical arguments against Soames' approach to the derivation of natural language presuppositions.</Paragraph>
    <Paragraph position="2"> This paper presents a reappraisal of some of the insightful counterexamples to Gazdar's method given in /Soames 1982/. Given an appropriate representation of the sentences in question~ the default logic approach to natural language presuppositions described in /Mercer 1987, 1988/gives a simple and straightforward explanation for the presuppositional nature of these sentences.</Paragraph>
  </Section>
class="xml-element"></Paper>