input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Second messenger for smooth muscle relaxation mediated by NO is:   (A) Ca'   (B) cAMP   (C) cGMP   (D) Magnesium
output: ['(C) cGMP <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Ca'  (B) cAMP  (C) cGMP  (D) Magnesium <> possible answers", '  Second messenger for smooth muscle relaxation mediated by NO is: <> context']