Question: what kind of political system does spain have
[{'answer': 'a parliamentary monarchy', 'provenance': [{'wikipedia_id': '27392', 'title': 'Politics of Spain', 'start_paragraph_id': 2, 'start_character': 35, 'end_paragraph_id': 2, 'end_character': 59, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '27392', 'title': 'Politics of Spain', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 1011, 'bleu_score': 0.9486638907063211, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8199440539895249571}, 'section': 'Section::::Abstract.'}]}]