input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Metronidazole:   (A) Has no side-effects   (B) Is used in management of ANUG   (C) Is mainly concentrated in saliva   (D) Is active against gram-positive aerobes
output: ['(B) Is used in management of ANUG <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Has no side-effects  (B) Is used in management of ANUG  (C) Is mainly concentrated in saliva  (D) Is active against gram-positive aerobes <> possible answers', '  Metronidazole: <> context']