In 2007, which Grand Slam tournament did Roger Federer not win?
{'directed': True, 'multigraph': False, 'graph': {}, 'nodes': [{'type': 'INTERNAL', 'name_': 'Q847', 'id': 0, 'label': 'tennis'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q1426', 'id': 1, 'label': 'Roger Federer'}, {'type': 'QUESTIONS_ENTITY', 'name_': 'Q102113', 'id': 2, 'label': 'Grand Slam'}, {'type': 'ANSWER_CANDIDATE_ENTITY', 'name_': 'Q15649219', 'id': 3, 'label': 'Severin Lüthi'}], 'links': [{'name_': 'P641', 'source': 1, 'target': 0, 'label': 'sport'}, {'name_': 'P286', 'source': 1, 'target': 3, 'label': 'head coach'}, {'name_': 'P641', 'source': 2, 'target': 0, 'label': 'sport'}, {'name_': 'P641', 'source': 3, 'target': 0, 'label': 'sport'}]}
Roger Federer is the head coach of Severin Lüthi, who plays tennis. The sport of tennis is played at the Grand Slam.
Roger Federer is the coach of tennis player , Severin Lüthi , whose sport is the Grand Slam .
In 2007, which Grand Slam tournament did Roger Federer not win?</s>Roger Federer is the head coach of [unused1]Severin Lüthi                [unused2] , who plays tennis. The sport of tennis is played at the Grand Slam.
In 2007, which Grand Slam tournament did Roger Federer not win?</s>Roger Federer is the head coach of Severin Lüthi, who plays tennis. The sport of tennis is played at the Grand Slam.
In 2007, which Grand Slam tournament did Roger Federer not win?</s>Roger Federer is the coach of tennis player , [unused1]Severin Lüthi                [unused2] , whose sport is the Grand Slam .
In 2007, which Grand Slam tournament did Roger Federer not win?</s>Roger Federer is the coach of tennis player , Severin Lüthi , whose sport is the Grand Slam .
In 2007, which Grand Slam tournament did Roger Federer not win?</s>tennis,0,tennis,tennis,0,Roger Federer,tennis,0,Grand Slam,tennis,0,[unused1]Severin Lüthi[unused2],Roger Federer,sport,tennis,Roger Federer,0,Roger Federer,Roger Federer,0,Grand Slam,Roger Federer,head coach,[unused1]Severin Lüthi[unused2],Grand Slam,sport,tennis,Grand Slam,0,Roger Federer,Grand Slam,0,Grand Slam,Grand Slam,0,[unused1]Severin Lüthi[unused2],[unused1]Severin Lüthi[unused2],sport,tennis,[unused1]Severin Lüthi[unused2],0,Roger Federer,[unused1]Severin Lüthi[unused2],0,Grand Slam,[unused1]Severin Lüthi[unused2],0,[unused1]Severin Lüthi[unused2]
In 2007, which Grand Slam tournament did Roger Federer not win?</s>tennis,0,tennis,tennis,0,Roger Federer,tennis,0,Grand Slam,tennis,0,Severin Lüthi,Roger Federer,sport,tennis,Roger Federer,0,Roger Federer,Roger Federer,0,Grand Slam,Roger Federer,head coach,Severin Lüthi,Grand Slam,sport,tennis,Grand Slam,0,Roger Federer,Grand Slam,0,Grand Slam,Grand Slam,0,Severin Lüthi,Severin Lüthi,sport,tennis,Severin Lüthi,0,Roger Federer,Severin Lüthi,0,Grand Slam,Severin Lüthi,0,Severin Lüthi