Instructions: This task is about reading the given passage and construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) it is answerable from the passage, (iii) its answer is unique (iv) its answer is a continuous text span from the paragraph. Avoid creating questions that (i) can be answered correctly without actually understanding the paragraph and (ii) uses same words or phrases given in the passage.
Input: Some scholars, such as Mark U. Edwards in his book Luther's Last Battles: Politics and Polemics 1531–46 (1983), suggest that since Luther's increasingly antisemitic views developed during the years his health deteriorated, it is possible they were at least partly the product of a declining state of mind. Edwards also comments that Luther often deliberately used "vulgarity and violence" for effect, both in his writings condemning the Jews and in diatribes against "Turks" (Muslims) and Catholics.
Output:
What does Mark U. Edwards claim as a possible cause of Luther's antisemitism?