question: Who's won more head-to-head tennis matches between each other, Novak Djokovic or Roger Federer?
answerText: Novak Djokovic
questionEntity.name: Q1426
questionEntity.entityType: entity
questionEntity.label: Roger Federer
questionEntity.mention: Roger Federer
questionEntity.name: Q5812
questionEntity.entityType: entity
questionEntity.label: Novak Djokovic
questionEntity.mention: Novak Djokovic
answerEntity.name: Q5812
answerEntity.label: Novak Djokovic