Question: Who won 2 Grand Slam doubles titles, Ellis Ferreira or Pavel Složil?

full_context: Document 1: Petr Pála: Petr Pála (born 2 October 1975) is a former professional tennis player from the Czech Republic. Together with Pavel Vízner he reached the men's doubles final of the 2001 French Open but lost to Indians Mahesh Bhupathi and Leander Paes (6–7, 3–6). Pála was coached by his father František, who was a professional tennis player on the ATP tour.
Document 2: Pavel Složil: Pavel Složil (born 29 December 1955) is a former professional tennis player from Czechoslovakia.
Document 3: Rick Leach: Rick Leach (born December 28, 1964) is a former professional tennis player and a coach from the United States. A doubles specialist, he won five Grand Slam men's doubles titles (three Australian Open, one Wimbledon, one US Open), and four Grand Slam mixed doubles titles (two Australian Open, one Wimbledon, one US Open). Leach reached the World No. 1 doubles ranking in 1990.
Document 4: Adam Pavlásek: Adam Pavlásek (born 8 October 1994) is a tennis player playing on the ATP Challenger Tour from the Czech Republic. He reached his career-high ATP singles ranking of World No. 72 in January 2017. At the start of 2015, Pavlásek replaced injured countryman Radek Štěpánek in the Hopman Cup, playing alongside Lucie Šafářová. He made a name for himself by defeating world number 20 Fabio Fognini of Italy, Pavlásek's first ever win over a top 20 player.
Document 5: Jim Courier: James Spencer Courier Jr. (born August 17, 1970) is an American former World No. 1 professional tennis player. During his career, he won four Grand Slam singles titles, two at the French Open and two at the Australian Open. He holds the record for being the youngest man to have reached the finals of all four Grand Slam singles tournaments, at the age of 22 years and 11 months. He also won five Masters 1000 series titles. Until Novak Djokovic in 2016, Courier was the last man to win both the Australian and French Opens in the same calendar year.
Document 6: Květa Peschke: Květoslava Peschkeová, (née Hrdličková; born 9 July 1975) better known as Květa Peschke, is a professional tennis player from the Czech Republic.
Document 7: Helena Suková: Helena Suková (] ) (born 23 February 1965) is a former professional tennis player from the Czech Republic. During her career, she won 14 Grand Slam doubles titles, 9 of them in women's doubles and 5 of them in mixed doubles. She also was a four-time Grand Slam singles runner-up and won 10 singles titles and 69 doubles titles.
Document 8: 2002 Australian Open – Mixed Doubles: Corina Morariu and Ellis Ferreira were the defending champions, but could not defend their title. While Morariu did not compete this year, Ferreira partnered with Cara Black and lost in First Round to Rita Grande and Jeff Tarango in three sets.
Document 9: Tomáš Šmíd: Tomáš Šmíd (born May 20, 1956 in Plzeň) is a former tennis player from Czechoslovakia, who won nine singles titles during his career. In doubles, he won fifty-four titles and was World No. 1 in doubles from December 17, 1984 to August 11, 1985. The right-hander reached his highest ATP singles ranking of World No. 11 in July 1984. Šmíd participated in 31 Davis Cup ties for Czechoslovakia from 1977–1989, posting a 20-10 record in doubles and a 22-15 record in singles.
Document 10: Frew McMillan: Frew Donald McMillan (born 20 May 1942) is a former professional male tennis player from South Africa who won five major doubles championships including three Wimbledons with Bob Hewitt. Altogether, he won 63 doubles titles, surpassed only by the Bryan brothers, Todd Woodbridge, John McEnroe and Tom Okker. He was also ranked No.1 in Doubles on the ATP Computer for a significant period from 1977 to 1979 when he was aged 37.
Document 11: Ellis Ferreira: Ellis Ferreira (born 19 February 1970 in Pretoria, South Africa) is a former professional male tennis player from South Africa. He played collegiately at the University of Alabama, earning all-SEC and all-American honors. He won 2 Grand Slam doubles titles, the Men's title at the 2000 Australian Open with Rick Leach and the mixed doubles at the Australian Open with Corina Morariu in 2001. Ferreira was named the Senior Assistant Men's and Women's Tennis Head Coach at Washington College in Chestertown, Maryland, in July 2007. Ferreira is now the co-owner of the Eagleton/ Ferreira Tennis Academy on Longboat Key in Florida (www.eftennis.com).
Document 12: Renáta Tomanová: Renáta Tomanová (born 9 December 1954) is a former professional tennis player from Czechoslovakia.
Document 13: 2001 Australian Open – Men's Doubles: Ellis Ferreira and Rick Leach were the defending champions, but Leach did not participate. Ferreira paired with David Rikl but lost in the second round to Arnaud Clément and Sébastien Grosjean.
Document 14: Jean-Julien Rojer: Jean-Julien Rojer (] ; born 25 August 1981) is a Dutch professional tennis player from Curaçao. His highest ATP singles ranking is 218th, which he achieved on 15 August 2005. A doubles specialist, his career-high in doubles is World No. 3, which he reached in November 2015. His former doubles partners include Eric Butorac and Aisam-ul-Haq Qureshi. He currently plays with Horia Tecău of Romania, with whom he won the men's double titles in the 2015 Wimbledon and 2017 US Open championships. With Anna-Lena Grönefeld, he also won the mixed doubles' title at the 2014 French Open. He attended UCLA where he competed for the UCLA Bruins men's tennis team.
Document 15: Pavel Vojtisek: Paul Vojtischek (born Pavel Vojtíšek, 13 June 1963) is a Czechoslovak-born West German retired professional tennis player. Vojtisek, who got West German citizenship in his early 20s, is married to two-time Grand Slam finalist Renáta Tomanová.
ground_truth: Ellis Ferreira