Question: which type of city government is most favored by the large cities in the united states
[{'answer': 'mayor -- council government system'}, {'provenance': [{'wikipedia_id': '23809142', 'title': 'Mayor–council government', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 352, 'bleu_score': 0.9262685672663881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 996528590784990005}, 'section': 'Section::::Abstract.'}]}]