Which series has more games, Resident Evil or Mafia?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q4167836', 'id': 0, 'label': 'Wikimedia category'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q220260', 'id': 1, 'label': 'Resident Evil'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q6430781', 'id': 2, 'label': 'Category:Resident Evil'}, {'type': 'INTERNAL', 'name_': 'Q7034713', 'id': 3, 'label': 'Category:Mafia (series)'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q21526531', 'id': 4, 'label': 'Mafia'}], 'links': [{'name_': 'P910', 'source': 1, 'target': 2, 'label': "topic's main category"}, {'name_': 'P31', 'source': 2, 'target': 0, 'label': 'instance of'}, {'name_': 'P301', 'source': 2, 'target': 1, 'label': "category's main topic"}, {'name_': 'P31', 'source': 3, 'target': 0, 'label': 'instance of'}, {'name_': 'P301', 'source': 3, 'target': 4, 'label': "category's main topic"}]}