input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following vessels supply the anal canal?   (A) Superior rectal aery   (B) Middle rectal aery   (C) Inferior rectal aery   (D) all of the following
output: ['(D) all of the following <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Superior rectal aery  (B) Middle rectal aery  (C) Inferior rectal aery  (D) all of the following <> possible answers', '  Which of the following vessels supply the anal canal? <> context']