input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which does not cross placenta:   (A) Heparin   (B) Morphine   (C) Naloxone   (D) Warfarin
output: ['(A) Heparin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Heparin  (B) Morphine  (C) Naloxone  (D) Warfarin <> possible answers', '  Which does not cross placenta: <> context']