input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The Chamfer finish line is used in   (A) Lingual surface of metal ceramic crown   (B) Facial surface of metal ceramic crown   (C) Facial surface of porcelain jacket crown   (D) Lingual surface of porcelain jacket crown
output: ['(A) Lingual surface of metal ceramic crown <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Lingual surface of metal ceramic crown  (B) Facial surface of metal ceramic crown  (C) Facial surface of porcelain jacket crown  (D) Lingual surface of porcelain jacket crown <> possible answers', '  The Chamfer finish line is used in <> context']