Question:  George Martin Long is a goalkeeper who plays for a professional association football club based at grounds once shared with what other club?

full_context: Document 1: AFC Wimbledon: AFC Wimbledon is a professional association football club based in Kingston upon Thames, south west London, England. They play in League One of the English Football League, the third tier in the English football league system since promotion in May 2016. They are based at Kingsmeadow, a ground which was shared with Isthmian League club Kingstonian F.C. until 2017.
Document 2: List of Wimbledon F.C. seasons: Wimbledon Football Club was an English football club from Wimbledon, south-west London, amateur from 1889 to 1964 and professional thereafter. Founded in 1889 as Wimbledon Old Central Football Club, an amateur club playing in local league competitions, the club shortened its name to "Wimbledon" in 1905, entered the FA Amateur Cup for the first time in 1905–06 and joined the Spartan League in 1909. After going out of business a year later, Wimbledon immediately reformed and returned to local leagues in 1912, where the team stayed until the 1919–20 season when the club joined the Athenian League. Moving to the Isthmian League in 1921, Wimbledon won four league championships in six years during the 1930s and reached the FA Amateur Cup Final in 1935 before losing to Bishop Auckland after a replay. The club continued to be successful following the Second World War, again reaching the Amateur Cup Final in 1947 and finishing as runners-up in the Isthmian League in 1950 and 1952. After claiming a fourth Isthmian League crown in 1959, Wimbledon then took three successive championships from 1962 to 1964, as well as the 1963 FA Amateur Cup.
Document 3: Milton Keynes Dons F.C. league record by opponent: Milton Keynes Dons Football Club is an English association football club based in Milton Keynes, Buckinghamshire that has competed in the English Football League (Championship, League One and League Two, the second, third and fourth tiers in English football respectively) since the team was founded. The club found itself in League One after Wimbledon F.C. relocated to Milton Keynes in 2003. The club gave back Wimbledon's trophies to the London Borough of Merton in 2007, and since then, officially, the club is considered to have been founded in 2004. The MK Dons currently compete in League One as of the 2016–17 season.
Document 4: Southampton F.C. Under-23s and Academy: Southampton Under-23s and Academy or Saints Under-23s and Academy is the youth organisation run by Southampton F.C. to encourage and develop young footballers in the south of England. Renowned players including Gareth Bale, Theo Walcott, and Alan Shearer began their careers at this academy.
Document 5: Milton Keynes Dons F.C.: Milton Keynes Dons Football Club ( ; usually abbreviated to MK Dons) is a professional association football club based in Milton Keynes, Buckinghamshire, England. The result of Wimbledon F.C.'s controversial relocation to Milton Keynes from south London in September 2003, the club officially considers itself to have been founded in 2004, when it adopted its present name, badge and home colours. As of the 2017–18 season its first team plays in League One, the third tier of English football.
Document 6: Relocation of Wimbledon F.C. to Milton Keynes: Wimbledon Football Club relocated to Milton Keynes in September 2003, 16 months after receiving permission to do so from an independent commission appointed by the Football Association. The move took the team from south London, where it had been based since its foundation in 1889, to Milton Keynes, a new town in Buckinghamshire, about 56 mi to the northwest of the club's traditional home district Wimbledon. Hugely controversial, the move's authorisation prompted disaffected Wimbledon supporters to form AFC Wimbledon, a new club, in June 2002. The relocated team played home matches in Milton Keynes under the Wimbledon name from September 2003 until June 2004, when following the end of the 2003–04 season it renamed itself Milton Keynes Dons F.C. (MK Dons).
Document 7: Sam Johnstone: Samuel Luke Johnstone (born 25 March 1993) is an English professional footballer who plays as goalkeeper for Aston Villa, on loan from Manchester United. He has also spent time on loan with Oldham Athletic, Scunthorpe United, Walsall, Yeovil Town, Doncaster Rovers and Preston North End. He was an England youth international, winning caps at under-16, under-17, under-19 and under-20 levels. He is the son of Glenn Johnstone, a former professional footballer who played as a goalkeeper for Preston North End in the early 1990s.
Document 8: List of AFC Wimbledon seasons: AFC Wimbledon is an English professional association football club, currently based in Kingston upon Thames, Greater London. The club was formed on 30 May 2002 by supporters of Wimbledon Football Club, led by Kris Stewart, Marc Jones and Trevor Williams who strongly opposed the decision of an independent commission appointed by The Football Association to allow the relocation of Wimbledon F.C. to Milton Keynes, to be subsequently renamed as Milton Keynes Dons.
Document 9: AFC Wimbledon league record by opponent: AFC Wimbledon is an English professional association football club, based in Kingston upon Thames, Greater London. The club was formed on 30 May 2002 by a group of supporters of Wimbledon Football Club, led by Kris Stewart, Marc Jones and Trevor Williams who strongly opposed the decision of an independent commission appointed by the FA to allow the relocation of Wimbledon F.C. to Milton Keynes, who were subsequently reformed as Milton Keynes Dons in 2004.
Document 10: George Haigh: George Haigh (born 26 June 1915) is an English former professional footballer, mainly known for his association with Stockport County. At the age of 102, he is the oldest surviving former County player, and it is believed he is also the oldest surviving former professional footballer.
Document 11: Billy Sharp: William Louis Sharp (born 5 February 1986) is an English professional footballer who plays as a striker for Championship club Sheffield United. He has also played for Rushden & Diamonds, Scunthorpe United, Southampton, Nottingham Forest, Reading, Doncaster Rovers and Leeds United.
Document 12: Ashley Young: Ashley Simon Young (born 9 July 1985) is an English professional footballer who plays as a winger for Premier League club Manchester United and the England national team.
Document 13: David de Gea: David de Gea Quintana (] ; born 7 November 1990) is a Spanish professional footballer who plays as a goalkeeper for English club Manchester United and the Spain national team. He has been hailed as one of the best goalkeepers in the world.
Document 14: George Long (footballer): George Martin Long (born 5 November 1993) is an English footballer who plays for AFC Wimbledon as a goalkeeper on loan from Sheffield United. Born in Sheffield, South Yorkshire he came through the youth ranks at his hometown Sheffield United before making the break into the first team, and has also represented England at Under 18 level. Long has previously had loan spells at Oxford United and Motherwell.
Document 15: Kingstonian F.C.: Kingstonian Football Club is an English semi-professional football club originally based in the Royal Borough of Kingston upon Thames which currently plays in the Isthmian League Premier Division. The club play at Fetcham Grove in Leatherhead having moved out of Kingsmeadow at the end of the 2016–17 season which had been their home since 1989, when they left their original Richmond Road ground. They shared Kingsmeadow with AFC Wimbledon since 2002, who purchased the lease of Kingsmeadow in 2003 before selling the ground to Chelsea F.C. in 2016.
ground_truth: Kingstonian F.C.