Question: The English mountaineer who was part of the first three British expeditions to Mount Everst was part of what boat club? 

Context articles: Women's Boat Race 2013
Women's Boat Race 2014
Magdalene Boat Club
Goldie (Cambridge University Boat Club)
University rowing (UK)
First and Third Trinity Boat Club
Brasenose College Boat Club
Leander Club
George Mallory
Women's Boat Race

The 68th Women's Boat Race took place on 24 March 2013.
 The race, between crews representing Oxford University Women's Boat Club and Cambridge University Women's Boat Club, was conducted as part of the Henley Boat Races.
 It took place on a 2 km stretch of water on 2012 Olympic venue Dorney Lake.
 Cambridge were the heavier of the crews and consisted of an all-British crew, while Oxford's boat included a Hungarian rower and an American cox.
 Oxford won the race by one and three-quarter lengths in a time of 7 minutes 11 seconds, their first win since the 2011 race.
 The victory took the overall record in the event to 41–27 in Cambridge's favour.
The 69th Women's Boat Race took place on 30 March 2014.
 The race, between crews representing Oxford University Women's Boat Club and Cambridge University Women's Boat Club, was umpired by Judith Packer.
 Cambridge's crew, the heavier of the two, was entirely British, while Oxford's boat included rowers from Canada, Switzerland and the United States.
 Oxford won by four lengths in a time of 5 minutes 50 seconds, their second consecutive win.
 The victory took the overall record in the event to 41–28 in Cambridge's favour.
 It was the last time the race would be conducted over a 2 km straight race as part of the Henley Boat Races.
Magdalene Boat Club (MBC) is the rowing club for members of Magdalene College, Cambridge.
 Magdalene Boat Club was founded in 1828.
 Mountaineer George Mallory was Captain of Boats (1907–08) when MBC was widely recognised as the fastest boat on the River Cam.
Goldie is the second boat of the Cambridge University Boat Club, which competes in an annual rowing race against Isis (the second boat of the Oxford University Boat Club) on Boat Race Day each year.
 The boat is named in tribute to CUBC's legendary President John Goldie who also gave his name to the Goldie Boathouse.
 The first official race between the two crews was in 1965, which Isis won.
 Since the race started Goldie has won 29 races, and Isis 22 races.
University rowing in the United Kingdom began when it was introduced to Oxford in the late 18th century.
 The first known race at a university took place at Oxford in 1815 between Brasenose and Jesus and the first inter-university boat race, between Oxford and Cambridge, was rowed on 10 June 1829.
 Today, many universities have a boat club and at some collegiate universities—Oxford, Cambridge, Durham, and London—each college has its own club as well as a main university club.
 In contrast to the Oxford/Cambridge/Durham colleges, London colleges are members of British Universities and Colleges Sport in their own right, and thus compete in inter-university competitions.
 In Scotland, the rowing clubs of Glasgow University and Edinburgh University initiated an annual race in 1877, making this competition the second oldest in the United Kingdom.
 Competitive university rowing in Northern Ireland began in the 1930s with the formation of Queen's University Belfast Boat Club in 1931, whose first inter-varsity races were a triangular tournament against Glasgow and UCD in 1934-35 and who entered the Wylie Cup (which had been running between Irish universities since 1922) from 1937–38; the Welsh Boat Race began in 2006.
The First and Third Trinity Boat Club is the rowing club of Trinity College in Cambridge, England.
 The club formally came into existence in 1946 when the First Trinity Boat Club and the Third Trinity Boat Club merged, although the 2 clubs had been rowing together for several years before that date.
 The first boat club associated with Trinity was formed in 1825 and came to be known as First Trinity in 1833 when the Third Trinity Boat Club was formed (a Second Trinity Boat Club was formed in 1831 but did not have a continuous existence until 1840).
 Membership of Third Trinity was originally confined to Old Etonians and Old Westminsters.
 Members of Third Trinity were allowed also to be members of First or Second Trinity and often were.
Brasenose College Boat Club (BNCBC) is the rowing club of Brasenose College, Oxford, in Oxford, England.
 It is one of the oldest boat clubs in the world, having beaten Jesus College Boat Club in the first modern rowing race, held at Oxford in 1815.
 Although rowing at schools such as Eton and Westminster School Boat Club predates this, the 1815 contest is the first recorded race between rowing clubs anywhere in the world.
Leander Club, founded in 1818, is one of the oldest rowing clubs in the world, and the oldest non-academic club.
 It is based in Remenham in Berkshire, England and adjoins Henley-on-Thames.
 Only three other surviving clubs were founded prior to Leander: Brasenose College Boat Club and Jesus College Boat Club (the two competing in a Head race in 1815) and Westminster School Boat Club, founded in 1813.
George Herbert Leigh Mallory (18 June 1886 – 8 or 9 June 1924) was an English mountaineer who took part in the first three British expeditions to Mount Everest, in the early 1920s.
The Women's Boat Race is an annual rowing race between Cambridge University Women's Boat Club and Oxford University Women's Boat Club.
 First rowed in 1927, the race has taken place annually since 1964.
 Since the 2015 race it has been rowed on the same day and course as the men's Boat Race on the River Thames in London, taking place around Easter.
 The combined event of two races is known as "The Boat Races", or by a title that includes the name of its official charity, '"The Cancer Research UK Boat Races", its sponsor, Newton Investment Management, having donated the title to the charity.
 The race is rowed in eights and the cox can be male or female.