input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Drug causing toxic optic neuropathy is:March 2009   (A) Pyrazinamide   (B) Chloroquine   (C) Ethambutol   (D) Tetracycile
output: ['(C) Ethambutol <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Pyrazinamide  (B) Chloroquine  (C) Ethambutol  (D) Tetracycile <> possible answers', '  Drug causing toxic optic neuropathy is:March 2009 <> context']