input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following is a common osseous lesion in periodontitis is   (A) Exostosis   (B) crater   (C) buttressing bone   (D) hemiseptum
output: ['(B) crater <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Exostosis  (B) crater  (C) buttressing bone  (D) hemiseptum <> possible answers', '  Which of the following is a common osseous lesion in\nperiodontitis is <> context']