input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Antigen-presenting cells are all except:   (A) M-cells   (B) Macrophages   (C) Langerhans cells   (D) Thymocytes
output: ['(D) Thymocytes <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) M-cells  (B) Macrophages  (C) Langerhans cells  (D) Thymocytes <> possible answers', '  Antigen-presenting cells are all except: <> context']