What city has the most sports teams?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q1549591', 'id': 0, 'label': 'big city'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q515', 'id': 1, 'label': 'city'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q3957', 'id': 2, 'label': 'town'}, {'type': 'INTERNAL', 'name_': 'Q6087', 'id': 3, 'label': 'Harz District'}, {'type': 'INTERNAL', 'name_': 'Q424984', 'id': 4, 'label': 'Oakville'}, {'type': 'INTERNAL', 'name_': 'Q526353', 'id': 5, 'label': 'Harzgerode'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q12973014', 'id': 6, 'label': 'sports team'}, {'type': 'INTERNAL', 'name_': 'Q17111244', 'id': 7, 'label': 'Oakville Buzz'}], 'links': [{'name_': 'P279', 'source': 0, 'target': 1, 'label': 'subclass of'}, {'name_': 'P3729', 'source': 0, 'target': 2, 'label': 'next lower rank'}, {'name_': 'P31', 'source': 4, 'target': 2, 'label': 'instance of'}, {'name_': 'P31', 'source': 5, 'target': 2, 'label': 'instance of'}, {'name_': 'P131', 'source': 5, 'target': 3, 'label': 'located in the administrative territorial entity'}, {'name_': 'P1687', 'source': 6, 'target': 3, 'label': 'Wikidata property'}, {'name_': 'P131', 'source': 7, 'target': 4, 'label': 'located in the administrative territorial entity'}, {'name_': 'P31', 'source': 7, 'target': 6, 'label': 'instance of'}]}