 The thought here is that—to use the language of “possible worlds”—“the F” in any instance of (EDN) might well denote different entities in different possible worlds. So, for example, it might be said that a material object x dependsN for its existence upon the matter composing x, even though it might have been composed of different matter, because in every possible world in which x exists the matter composing x in that world exists in that world.