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<Paper uid="J82-1001">
  <Title>Phrase Structure Trees Bear More Fruit</Title>
  <Section position="9" start_page="0" end_page="0" type="concl">
    <SectionTitle>
6. Conclusion:
</SectionTitle>
    <Paragraph position="0"> We have presented several results concerning phrase structure trees that show that phrase structure trees when viewed in certain ways have much more descriptive power than one would have thought. We have given a brief account of our work on local constraints and presented an intuitive proof. We have also compared it to some aspects of the framework of Gazdar and that of Peters and Karttunen. We have also shown that phrase structure trees, even when deprived of the labels, retain in a certain sense all the structural information. This result has implications for grammatical inference procedures.</Paragraph>
  </Section>
class="xml-element"></Paper>