input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Pickling is done:   (A) To remove oxide film from casting   (B) Polish the casting   (C) Improve the strength of casting   (D) Avoid casting defects
output: ['(A) To remove oxide film from casting <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) To remove oxide film from casting  (B) Polish the casting  (C) Improve the strength of casting  (D) Avoid casting defects <> possible answers', '  Pickling is done: <> context']