 As we have seen, this is a common issue for de re readings of the modal sentences. Kilwardby assumes that Aristotle’s modal syllogistic is a logic for divided (de re) sentences. He proceeds to give two separate solutions to this puzzle. The first is based on a distinction between different readings of (5:1). Kilwardby explains that the subject term of a sentence can stand for the subject of the inherence (the suppositum), or for the qualification through which the subject is specified (qualitas/forma). If the term ‘white’ stands for its suppositum, it refers to a thing that is white or to ‘that which is white’, but if it stands for the quality or form, it refers to the whiteness inhering in that which is white, rather than to the thing in which it inheres. Kilwardby says that in (5:1), ‘literate being’ stands for its suppositum, which explains why (5:1) is true, whereas in (5:2) the term is taken differently as standing for the quality or form. According to Kilwardby, the meaning of the original subject term is changed when it no longer stands for the suppositum (literate being), but for the abstract quality of being literate, and it is this change that blocks the conversion. (5:2) is true if it is read as: