input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of these is pierced during posterior superior alveolar nerve Block?   (A) Medial Pterygoid   (B) Lateral Pterygoid   (C) Buccinator   (D) Masseter
output: ['(C) Buccinator <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Medial Pterygoid  (B) Lateral Pterygoid  (C) Buccinator  (D) Masseter <> possible answers', '  Which of these is pierced during posterior superior alveolar nerve Block? <> context']