input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The pin used in pin restoration of a root canal treated tooth is:   (A) Self thread pin   (B) Cemented pin   (C) Frictional pin   (D) Any of the above
output: ['(B) Cemented pin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Self thread pin  (B) Cemented pin  (C) Frictional pin  (D) Any of the above <> possible answers', '  The pin used in pin restoration of a root canal treated tooth is: <> context']