input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The purpose of plane of orientation is:   (A) To serve as a guide in establishing occlusal plane   (B) To aid in measuring height and Length of posterior teeth   (C) To serve as an arbitrary plane when established on the articulator   (D) To divide the distance between upper and Lower cast equally
output: ['(A) To serve as a guide in establishing occlusal plane <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) To serve as a guide in establishing occlusal plane  (B) To aid in measuring height and Length of posterior teeth  (C) To serve as an arbitrary plane when established on the articulator  (D) To divide the distance between upper and Lower cast equally <> possible answers', '  The purpose of plane of orientation is: <> context']