Question: Who has won the most tennis major titles?
Answer: Roger Federer
Disambiguated annotations:
qaPairs: question: Who has won the most men's singles tennis major titles?
answer: Federer
Roger Federer
question: Who has won the most women's singles tennis major titles?
answer: Court
Margaret Court
question: Who has won the most men's doubles tennis major titles?
answer: Bryan
Mike Bryan
question: Who has won the most women's doubles tennis major titles?
answer: Martina Navratilova
Navratilova
question: Who has won the mixed men's doubles tennis major titles?
answer: Court
Margaret Court