Question: Who has won more Grand Slam doubles titles, Elizabeth Smylie or Vasek Pospisil?
Related documents: [0]  [DOC] Vasek Pospisil (, ] ; born June 23, 1990) is a Canadian professional tennis player. He is the No. 3 male ranked player in Canada, after Milos Raonic and Denis Shapovalov. Pospisil has a career-high World singles ranking of 25, and No. 4 in doubles. As Canada's currently ranked No. 3 in singles and No. 3 in doubles, he is an important member of the Canada Davis Cup team. Along with partner Jack Sock, he won the 2014 Wimbledon Championships and the 2015 Indian Wells Masters men's doubles titles. He also reached the quarterfinals in singles at the 2015 Wimbledon Championships. [END] 
[1]  [DOC] Elizabeth Smylie (née Sayers, born 11 April 1963), sometimes known as Liz Smylie, is a retired Australian professional tennis player. During her career, she won four Grand Slam titles, one of them in women's doubles and three in mixed doubles. She also won three singles titles and 36 doubles titles. [END] 
Answer: 
Elizabeth Smylie
Elizabeth Smylie