Question: the 47 political subdivisions in japan are called
[{'answer': 'Prefecture', 'provenance': [{'wikipedia_id': '74517', 'title': 'Prefectures of Japan', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]