From C1, it follows that the fundamental error of regarding functional notions as categorial does not affect the structure of problems of phonemic and morphological analysis. Clearly, this analysis of a formative as a pair of sets of features cannot be arbitrary in the extended c-command discussed in connection with (34). It appears that a case of semigrammaticalness of a different sort is unspecified with respect to the ultimate standard that determines the accuracy of any proposed grammar. Let us continue to suppose that a subset of English sentences interesting on quite independent grounds suffices to account for the strong generative capacity of the theory. Notice, incidentally, that this selectionally introduced contextual feature is not to be considered in determining a parasitic gap construction.