each clause in okanagan can be divided into two parts: inflected predicates which are required for every sentence, and optional arguments. okanagan allows a maximum of two arguments per sentence construction. these are marked by pronominal markers on the predicate. each argument is introduced to the sentence via an initial determiner; the only exception to initial determiners is in the case of proper names which do not need determiners to introduce them. predicates may be of any lexical category. there may be additional arguments added to a sentence in okanagan via complementizers. okanagan is unique among the majority of salish languages for the inclusion of the complementizer.