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': 'All of the following passthrough lesser sciatic foramen except: \nSelect and explain. \nA. Pudendal nerve, B. Internal pudendal vessels, C. Nerve to obturatorinternus, D. Inferior gluteal vessels', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Internal pudendal vessels', 'role': 'assistant'}]