What is the best-selling Sega Genesis game, ever?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'QUESTIONS_ENTITY', 'name_': 'Q10676', 'id': 0, 'label': 'Sega Genesis'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1046812', 'id': 1, 'label': 'Sonic the Hedgehog'}], 'links': [{'name_': 'P400', 'source': 1, 'target': 0, 'label': 'platform'}]}