  A second question which separates different versions of the presuppositional account is what kind of presuppositions are involved in the case of category mistakes. A natural hypothesis (endorsed by Asher (2011)) is that these are type presuppositions. For example, we might suggest that ‘is green’ triggers the presupposition that its subject is a concrete object; that ‘is prime’ triggers the presupposition that its subject is a number; and that ‘is pregnant’ triggers the presupposition that its subject is a female. This has the advantage of supporting the intuition (borne in their name) that category mistakes have something to do with a misclassification of kinds or categories. However, Magidor (2013, 139–146) argues that the presuppositions involved are more specific that this: for example, that the subject has a color in the case of ‘is green’, or that it is either prime or composite in the case of ‘prime’. Her argument relies on discourses such as these: