In the next section we describe the VR system that we are using as the platform for our NL research. Then, we will give some of the reasons for building a sophisticated natural language interface for the VR system.In this paper we discuss some aspects of our development of a natural language (NL) processing system to be used in a virtual reality ( V R ) environment. Our group is pursuing two lines of work: the Natural Language and Virtual Reality (NLVR) project and the natural language research program. The latter addresses basic research problems in NL processing and the former is an implementation project. The two are, in many ways, parallel and overlapping. The research generates hypotheses that we want t o test and the NLVR testbed provides new problems for research.

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