Question: what type of goverment does united kingdom have
[{'answer': 'unitary state', 'provenance': [{'wikipedia_id': '216400', 'title': 'Unitary state', 'start_paragraph_id': 1, 'start_character': 2, 'end_paragraph_id': 1, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '216400', 'title': 'Unitary state', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 668, 'bleu_score': 0.5940742145969911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7043670692146417162}, 'section': 'Section::::Abstract.'}]}]