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The Penn Treebank: Annotating Predicate-Argument Structure

, , , , , , , and . HLT '94: Proceedings of the workshop on Human Language Technology, page 114--119. Morristown, NJ, USA, Association for Computational Linguistics, (1994)
DOI: http://dx.doi.org/10.3115/1075812.1075835

Abstract

The Penn Treebank has recently implemented a new syntactic annotation scheme, designed to highlight aspects of predicate-argument structure. This paper discusses the implementation of crucial aspects of this new annotation scheme. It incorporates a more consistent treatment of a wide range of grammatical phenomena, provides a set of coindexed null elements in what can be thought of as ünderlying" position for phenomena such as wh-movement, passive, and the subjects of infinitival constructions, provides some non-context free annotational mechanism to allow the structure of discontinuous constituents to be easily recovered, and allows for a clear, concise tagging system for some semantic roles.

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