input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The commonest cause of occipitoposterior position of fetal head during labor is:   (A) Maternal obesity   (B) Multiparity   (C) Deflexion of fetal head   (D) Android pelvis
output: ['(D) Android pelvis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Maternal obesity  (B) Multiparity  (C) Deflexion of fetal head  (D) Android pelvis <> possible answers', '  The commonest cause of occipitoposterior position of fetal head during labor is: <> context']