Ungrammaticalities Arising from the Semantic Contrast between Definiteness and Indefiniteness

So far we have a location theory of the definite article, with inclusive­ ness an integral part, and a contrast between the inclusiveness of definite reference and the exclusiveness of indefinite reference, the latter accounting for the neutrality of indefinites to locatability in some cases, and the impossibility of locatability in others. Definite descriptions and indefinite descriptions therefore contrast with respect to inclusiveness versus exclusiveness. And some indefinites contrast with definites by actually being non-locatable in a shared set (where exclusiveness cannot be satisfied).