Who won more MotoGP World Championship, Casey Stoner or Valentino Rossi?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1949711', 'id': 0, 'label': 'MotoGP Hall of Fame'}, {'type': 'INTERNAL', 'name_': 'Q850292', 'id': 1, 'label': 'Grand Prix motorcycle racing'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q169814', 'id': 2, 'label': 'Valentino Rossi'}, {'type': 'INTERNAL', 'name_': 'Q193005', 'id': 3, 'label': 'Marco Simoncelli'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q313563', 'id': 4, 'label': 'Casey Stoner'}, {'type': 'INTERNAL', 'name_': 'Q241112', 'id': 5, 'label': 'Jorge Lorenzo'}, {'type': 'INTERNAL', 'name_': 'Q845726', 'id': 6, 'label': '2011 San Marino and Rimini Riviera motorcycle Grand Prix'}, {'type': 'INTERNAL', 'name_': 'Q1191295', 'id': 7, 'label': '2009 Spanish motorcycle Grand Prix'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q10858737', 'id': 8, 'label': 'MotoGP'}, {'type': 'INTERNAL', 'name_': 'Q911684', 'id': 9, 'label': '2011 Catalan motorcycle Grand Prix'}], 'links': [{'name_': 'P527', 'source': 1, 'target': 8, 'label': 'has part(s)'}, {'name_': 'P166', 'source': 3, 'target': 0, 'label': 'award received'}, {'name_': 'P166', 'source': 5, 'target': 0, 'label': 'award received'}, {'name_': 'P641', 'source': 5, 'target': 1, 'label': 'sport'}, {'name_': 'P641', 'source': 6, 'target': 1, 'label': 'sport'}, {'name_': 'P3764', 'source': 6, 'target': 4, 'label': 'pole position'}, {'name_': 'P1346', 'source': 6, 'target': 5, 'label': 'winner'}, {'name_': 'P641', 'source': 7, 'target': 1, 'label': 'sport'}, {'name_': 'P1346', 'source': 7, 'target': 2, 'label': 'winner'}, {'name_': 'P3764', 'source': 7, 'target': 5, 'label': 'pole position'}, {'name_': 'P641', 'source': 9, 'target': 1, 'label': 'sport'}, {'name_': 'P3764', 'source': 9, 'target': 3, 'label': 'pole position'}, {'name_': 'P1346', 'source': 9, 'target': 4, 'label': 'winner'}]}