If you ask a question like, "are there more metal fans in Europe or in America?", and you don't have either meaning in mind (you just say the words), is it a meaningful question?
And suppose that you meant exactly one of the two possibilities, but I, as the reader, did not know which: would it then be a meaningful question for me? In any case not meaningful enough to answer it or say much about it, except if I gave *two* different answers, thereby going through *all* the possible meanings.