input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Landmark for pup chamber opening is :   (A) CEJ   (B) Cervical third of crown   (C) Level of alveolar bone   (D) Enamel
output: ['(A) CEJ <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) CEJ  (B) Cervical third of crown  (C) Level of alveolar bone  (D) Enamel <> possible answers', '  Landmark for pup chamber opening is : <> context']