Question: which wall of the uterus is made of smooth muscle
[{'answer': 'myometrium', 'provenance': [{'wikipedia_id': '1816727', 'title': 'Myometrium', 'start_paragraph_id': 1, 'start_character': 4, 'end_paragraph_id': 1, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1816727', 'title': 'Myometrium', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 240, 'bleu_score': 0.9466178497997021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2093003962469556735}, 'section': 'Section::::Abstract.'}]}]