 Karttunen (1977, 7) disputes the existence of Hintikka’s ambiguity, but a version of this ambiguity that sets aside the details of Hintikka’s analysis of (37) has gained acceptance, namely, the distinction between mention-some and mention-all readings of a question or wh-complement. For example, under a mention-some reading of ‘What is in the closet?’, an answer must mention at least one item, whereas under a mention-all reading an answer must mention all items. A perhaps clearer example of a question for which a mention-some reading is natural is (51), which is discussed below in section  4.7  in connection with false-belief sensitivity.