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<Paper uid="P04-1071">
  <Title>Wrapping of Trees</Title>
  <Section position="9" start_page="0" end_page="0" type="concl">
    <SectionTitle>
8 Conclusion
</SectionTitle>
    <Paragraph position="0"> In many ways the formalism we have working with is a minimal extension of ordinary TAGs. Formally, the step from TAG to add the fourth hierarchical relation is directly analogous to the step from CFG to TAG. Moreover, while the graphs describing the derived structures are often rather complicated, conceptually they involve reasoning in terms of only a single additional relation. The benefit of the added complexity is a uniform account of a range of phenomena that has heretofore been difficult to encompass, an account that employs unitary elementary structures and eschews synchronized derivation operations, and which is, in many respects, closer to the spirit of the intuitions underlying TAG-based linguistic theory than previously considered extensions to TAG.</Paragraph>
    <Paragraph position="1"> While it is impossible to determine how comprehensive the coverage of a more fully developed theory of syntax based on this formalism will be without actually completing such a theory, we believe that the results presented here suggest that the uniformity provided by adding this fourth level of decomposition to our vocabulary is likely to more than compensate for the added complexity of the fourth level elementary structures.</Paragraph>
  </Section>
class="xml-element"></Paper>