Question: what is the type of government in japan
[{'answer': 'a constitutional monarchy', 'provenance': [{'wikipedia_id': '30858300', 'title': 'Government of Japan', 'start_paragraph_id': 1, 'start_character': 27, 'end_paragraph_id': 1, 'end_character': 52, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30858300', 'title': 'Government of Japan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 288, 'bleu_score': 0.9569637990759251, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16377129929268466092}, 'section': 'Section::::Abstract.'}]}]