Abstract
Our aim is to construct a system which is able to deal with semantics of Japanese complex sentences. One of the most important problem to be solved is the zero anaphora resolution. According to (Nakagawa, 1994; Nakagawa & Nishizawa, 1994), we can use a new pragmatic role called motivated to bridge semantic roles of subordinate and those of main clauses. The new role constrains the relation among semantic and pragmatic roles within subordinate or main clause for Japanese complex sentences. So, we construct the system that treats this type of relation by constraint logic programming, and we use feature structures to formalize these constraints in unification grammar formalism. We also describe how this system works.
