question: Did Serena Williams win her first Grand Slam tournament before her sister, Venus Williams?
answerText: Yes
questionEntity.name: Q11459
questionEntity.entityType: entity
questionEntity.label: Serena Williams
questionEntity.mention: Serena Williams
questionEntity.name: Q102113
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questionEntity.label: Grand Slam of tennis
questionEntity.mention: Grand Slam
questionEntity.name: Q11578
questionEntity.entityType: entity
questionEntity.label: Venus Williams
questionEntity.mention: Venus Williams
questionEntity.name: 1
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questionEntity.mention: first