Question: Who was first to win a Grand Slam doubles championship, Heather Watson or Édouard Roger-Vasselin?

full_context: Document 1: 2010 Challenger DCNS de Cherbourg – Doubles: Arnaud Clément and Édouard Roger-Vasselin were the defending champions, but they elected to defend their title with different partners.Clément partnered up with David Guez, but they withdrew before their quarterfinal match against Harsh Mankad and Adil Shamasdin.Roger-Vasselin partnered up with Nicolas Mahut and they won in the final 6–2, 6–4, over Mankad and Shamasdin.
Document 2: 2010 French Open – Legends Under 45 Doubles: Paul Haarhuis and Cédric Pioline were the defending champion, but Haarhuis did not play this year.Pioline partnered up with Arnaud Boetsch, but they were eliminated by Goran Ivanišević and Michael Stich in the round-robin stage.Yevgeny Kafelnikov and Andriy Medvedev won in the final 6–1, 6–1 against Ivanisevic and Stich.
Document 3: 2014 Hall of Fame Tennis Championships – Doubles: Nicolas Mahut and Édouard Roger-Vasselin were the defending champions, but Roger-Vasselin chose not to participate. Mahut played alongside Sergiy Stakhovsky, but lost in the semifinals to Jonathan Erlich and Rajeev Ram.<br>
Document 4: Garbiñe Muguruza: Garbiñe Muguruza Blanco (] ; born 8 October 1993) is a Spanish-Venezuelan tennis player who is currently ranked world No. 1 in singles by the Women's Tennis Association (WTA). Since turning professional in 2012, she has won five singles titles, including two majors at the 2016 French Open and the 2017 Wimbledon Championships.
Document 5: 2011 BNP Paribas Primrose Bordeaux – Doubles: Nicolas Mahut and Édouard Roger-Vasselin were the defending champions; however, Roger-Vasselin chose not to compete this year.
Document 6: 2016 French Open – Legends Under 45 Doubles: Juan Carlos Ferrero and Carlos Moyá were the defending champions and successfully defended their title, defeating Sébastien Grosjean and Fabrice Santoro in the final, 6–4, 6–4.
Document 7: Virginia Wade: Sarah Virginia Wade, (born 10 July 1945) is a former professional tennis player from Great Britain. She won three Grand Slam singles championships and four Grand Slam doubles championships, and is the only British woman in history to have won titles at all four Grand Slam tournaments. She was ranked as high as No. 2 in the world in singles, and No. 1 in the world in doubles.
Document 8: 2013 Moselle Open – Doubles: Nicolas Mahut and Édouard Roger-Vasselin were the defending champions, but chose not to participate together. Roger-Vasselin teamed up with Rohan Bopanna, but lost in the semifinals to Johan Brunström and Raven Klaasen.<br>
Document 9: 2007 Wimbledon Championships – Mixed Doubles: The mixed doubles event at the 2007 Wimbledon Championships was held over six rounds of competition. The final took place on July 8 with unseeded pair Jamie Murray and Jelena Janković defeating fifth-seeds Jonas Björkman and Alicia Molik in three sets. Jamie Murray became the first British Wimbledon champion since Jeremy Bates and Jo Durie won the same competition in the 1987 championships.
Document 10: Heather Watson career statistics: Heather Watson is a professional tennis player who is the current British number two behind Johanna Konta. Watson has been ranked as high as number 38 in the WTA rankings.
Document 11: 2015 French Open – Men's Doubles: Julien Benneteau and Édouard Roger-Vasselin were the defending champions, but Benneteau withdrew from the tournament because of a sports hernia. Roger-Vasselin played alongside Guillermo García-López, but lost in the third round to Ivan Dodig and Marcelo Melo.
Document 12: Heather Watson: Heather Miriam Watson (born 19 May 1992) is a British tennis player and a Wimbledon Mixed Doubles Champion. She is a former British No.1 and current British No. 2 behind Johanna Konta.
Document 13: Jamie Murray career statistics: Jamie Murray is a professional tennis player who is the current British number one doubles player. He has reached eight grand slam finals in total: (4 Doubles, 4 Mixed), he has won the mixed doubles at the 2007 Wimbledon Championships, 2017 Wimbledon Championships and 2017 US Open, and the men's doubles at the 2016 Australian Open and 2016 US Open, and has finished as runner-up in the men's doubles tournament at the 2015 Wimbledon Championships and 2015 US Open and in mixed doubles at the 2008 US Open. Murray has been ranked as high as World No. 1 in the ATP doubles rankings, and was the first Britain to be ranked as world number one since the introduction of computerised world rankings in the 1970s. He is currently ranked at world No. 5.
Document 14: Édouard Roger-Vasselin: Édouard Roger-Vasselin (] ; born 28 November 1983) is a male tennis player from France. He won the men's doubles title at Roland Garros in 2014, partnering Julien Benneteau. He is the son of 1983 French Open semifinalist Christophe Roger-Vasselin.
Document 15: Andy Murray: Sir Andrew Barron Murray, {'1': ", '2': ", '3': ", '4': "} (born 15 May 1987) is a British professional tennis player from Scotland currently ranked world no. 3 in men's singles. Murray represents Great Britain in his sporting activities and is a three-time Grand Slam tournament winner, two-time Olympic champion, Davis Cup champion and the winner of the 2016 ATP World Tour Finals.
ground_truth: Édouard Roger-Vasselin