Who has won the most Australian Open singles titles?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q847', 'id': 0, 'label': 'tennis'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q1426', 'id': 1, 'label': 'Roger Federer'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q60874', 'id': 2, 'label': 'Australian Open'}], 'links': [{'name_': 'P641', 'source': 1, 'target': 0, 'label': 'sport'}, {'name_': 'P641', 'source': 2, 'target': 0, 'label': 'sport'}]}
Roger Federer plays tennis and the Australian Open is one of his matches.
Roger Federer is a tennis player , as is the Australian Open .
Who has won the most Australian Open singles titles?</s> [unused1]Roger Federer                [unused2] plays tennis and the Australian Open is one of his matches.
Who has won the most Australian Open singles titles?</s>Roger Federer plays tennis and the Australian Open is one of his matches.
Who has won the most Australian Open singles titles?</s> [unused1]Roger Federer                [unused2] is a tennis player , as is the Australian Open .
Who has won the most Australian Open singles titles?</s>Roger Federer is a tennis player , as is the Australian Open .
Who has won the most Australian Open singles titles?</s>tennis,0,tennis,tennis,0,[unused1]Roger Federer[unused2],tennis,0,Australian Open,[unused1]Roger Federer[unused2],sport,tennis,[unused1]Roger Federer[unused2],0,[unused1]Roger Federer[unused2],[unused1]Roger Federer[unused2],0,Australian Open,Australian Open,sport,tennis,Australian Open,0,[unused1]Roger Federer[unused2],Australian Open,0,Australian Open
Who has won the most Australian Open singles titles?</s>tennis,0,tennis,tennis,0,Roger Federer,tennis,0,Australian Open,Roger Federer,sport,tennis,Roger Federer,0,Roger Federer,Roger Federer,0,Australian Open,Australian Open,sport,tennis,Australian Open,0,Roger Federer,Australian Open,0,Australian Open