A number of observations that we have made on Turkish have indicated that we need something beyond the traditional transitive and intransitive distinction, and utilize a framework where verb valence is considered as the obligatory co-existence of an arbitrary subset of possible arguments along with the obligatory exclusion of certain others, relative to a verb sense. Additional morphological lexical and semantic constraints on the syntactic constituents organized as a 5-tier constraint hierarchy, are utilized to map a given syntactic structure case-fraame to a specific verb sense.
