Question: Manchester City Football Club is a football club in Manchester, England, the club moved to the City of Manchester Stadium, in Manchester, England, also known as the Etihad Stadium for sponsorship reasons, in what year?

full_context: Document 1: Manchester City F.C. league record by opponent: Manchester City Football Club is an English association football club based in Manchester, which competes in the Premier League. Founded as West Gorton (St Marks) in 1880, the club after several changes of identity adopted the name 'Manchester City' in 1894. During the 1891–92 season, Manchester City joined the Football Alliance. The team was elected to The Football League in 1892, where the club remained until 1992, when the League's First Division was replaced as the top level of English football by the Premier League.
Document 2: City Ground: The City Ground is a football stadium in West Bridgford, Nottinghamshire, England, on the banks of the River Trent. It has been home to Nottingham Forest Football Club since 1898, and has 30,445 seats.
Document 3: Etihad Campus tram stop: Etihad Campus is a tram stop on the East Manchester Line (EML) of Greater Manchester's light-rail Metrolink system. The stop is located adjacent to the City of Manchester Stadium (also known as the Etihad Stadium).
Document 4: Old Trafford: Old Trafford is a football stadium in Old Trafford, Greater Manchester, England, and the home of Manchester United. With a capacity of 75,643, it is the largest club football stadium in the United Kingdom, the second-largest football stadium, and the eleventh-largest in Europe. It is about 0.5 mi from Old Trafford Cricket Ground and the adjacent tram stop.
Document 5: Manchester derby: The Manchester derby refers to football matches between Manchester City and Manchester United, first contested in 1881. Manchester City play at the Etihad Stadium, while Manchester United play at Old Trafford. The teams have played 174 matches in all competitions, United winning 72, City 50, and the remaining 52 having been drawn.
Document 6: Manchester Baseball Club: Manchester Baseball Club is one of the largest baseball clubs in the north of England, with two senior teams and four youth teams playing in the British Baseball Federation leagues. The club can trace its roots back as far as 1947, with the formation of the Stretford Saints. Although the Saints club folded in 1973, the name hung around, with the Trafford Saints youth team playing during the 1990s with reasonable success. Trafford merged with the senior Manchester team in 2000, creating the MBC as it is today.
Document 7: City of Manchester Stadium: The City of Manchester Stadium in Manchester, England, also known as the Etihad Stadium for sponsorship reasons, is the home ground of Manchester City Football Club and, with a domestic football capacity of 55,097, the fourth-largest in the Premier League and eighth-largest in the United Kingdom.
Document 8: List of Manchester City F.C. seasons: Manchester City is an English professional association football club based in Manchester, who currently play in the Premier League. The list covers the period from 1891 (when the club, then known as "Ardwick", joined the Football Alliance) to the present day. It details the club's achievements in senior league and cup competitions, and the top scorers for each season. The club was renamed Manchester City F.C in 1894, and moved to Maine Road in 1923. Since 2003 the club has played at the City of Manchester Stadium. Manchester City biggest rivals are Manchester United, whenever they play it is considered the Manchester Derby.
Document 9: History of Manchester United F.C. (1945–69): Manchester United Football Club is an English professional football club, based in Old Trafford, Greater Manchester, that plays in the Premier League. Founded as Newton Heath LYR Football Club in 1878, and changed its name to Manchester United in 1902.
Document 10: Manchester City F.C.: Manchester City Football Club is a football club in Manchester, England. Founded in 1880 as St. Mark's (West Gorton), they became Ardwick Association Football Club in 1887 and Manchester City in 1894. The club moved to the City of Manchester Stadium in 2003, having played at Maine Road since 1923.
Document 11: Etihad Campus: Etihad Campus is an area of Sportcity, Manchester which is mostly owned and operated by Manchester City Football Club. The campus includes the Etihad Stadium, the City Football Academy (CFA) training facility and club world headquarters, and undeveloped land adjacent to both of these facilities. These two main portions of the campus site are linked by a 60-metre landmark pedestrian walkway/footbridge that spans the junction of Alan Turing Way and Ashton New Road. The term Etihad Campus embraces both the stadium - which already existed when the name was coined in 2010 - as well as much of the surrounding undeveloped land that existed at that time, although the term is also frequently used as a direct synonym for just the CFA portion.
Document 12: Early grounds of Manchester City F.C.: Before Manchester City Football Club moved into their first permanent home in Manchester, England, in 1887, the club played at a short series of grounds which ranged from established cricket venues to bumpy fields with no stands or boundaries nor history of sporting usage. The club was founded as a philanthropic endeavour to encourage impressionable youths to commit to wholesome activities rather than falling to the local adolescent culture of alcohol and violence. The sport of football was barely 15 years from the writing of its own rulebook. The club had no immediate option of using or constructing a stadium, and thus most of their first locations were nothing more than painted lines and goalposts. As the club reformed and changed its name twice between 1880 and 1887, soits choice of locations were a series of low-cost, short-term solutions when their current location became untenable. In 1887, when City moved to their sixth pitch in only eight years, they had the money, ambition, reputation and stability to construct themselves a more permanent base of operations, at the stadium named Hyde Road.
Document 13: Bet365 Stadium: The bet365 Stadium is an all-seater football stadium in Stoke-on-Trent, Staffordshire, England and the home of Premier League club Stoke City. The stadium was previously called the Britannia Stadium but was renamed on 1 June 2016 when the club entered into a new stadium-naming rights agreement with its parent company, bet365. It has a capacity of 30,089 following the completion of expansion works in 2017.
Document 14: Manchester City F.C. ownership and finances: The Ownership of Manchester City Football Club traces back to 1894, when "Ardwick A.F.C." dissolved and were reformed as "Manchester City Football Club Ltd." Over recent years, the ownership and finances of Manchester City Football Club have been tumultuous with various owners of contrasting fortunes much in line with their inconsistent trend on the pitch and the club's hierarchy maintain the club is in a period of ""significant transformation"".
Document 15: Manchester United F.C.: Manchester United Football Club is a professional football club based in Old Trafford, Greater Manchester, England, that competes in the Premier League, the top flight of English football. Nicknamed "the Red Devils", the club was founded as Newton Heath LYR Football Club in 1878, changed its name to Manchester United in 1902 and moved to its current stadium, Old Trafford, in 1910.
ground_truth: 2003