This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
[{'content': 'Structures passing through the greater sciatic foramen are all of the following except - \nSelect and explain. \nA. Pyriformis, B. Superior gluteal nerve, C. Inferior gluteal nerve, D. Obturator nerve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Structures passing through greater sciatic foramen.\nPiriformis\nAbove Piriformis\n\n\xa0 \xa0Superior gluteal nerve and vessels\n\nBelow Piriformis\n\n\xa0 \xa0Inferior gluteal nerve and vessels\n\xa0 \xa0Sciatic nerve\n\xa0\xa0Posterior cutaneous nerve of thigh\n\xa0 \xa0Nerve to quadratus femoris\n\xa0 \xa0Pudendal nerve\n\xa0 \xa0Internal pudendal vessels\n\xa0 \xa0Nerve to obturator internus', 'role': 'assistant'}]