With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Manchester City F.C. is not an English football club.
text_B: Manchester City Football Club is a football club in Manchester , England .. football. association football. Manchester. Manchester. Founded in 1880 as St. Mark 's -LRB- West Gorton -RRB- , they became Ardwick Association Football Club in 1887 and Manchester City in 1894 .. Manchester. Manchester. The club moved to the City of Manchester Stadium in 2003 , having played at Maine Road since 1923 .. City of Manchester Stadium. City of Manchester Stadium. Manchester. Manchester. Maine Road. Maine Road. The club 's most successful period was in the late 1960s and early 1970s when they won the League Championship , FA Cup , League Cup and European Cup Winners ' Cup under the management team of Joe Mercer and Malcolm Allison .. League Championship. Football League First Division. FA Cup. FA Cup. League Cup. EFL Cup. Joe Mercer. Joe Mercer. Malcolm Allison. Malcolm Allison. After losing the 1981 FA Cup Final , the club went through a period of decline , culminating in relegation to the third tier of English football for the only time in their history in 1998 .. football. association football. FA Cup. FA Cup. 1981 FA Cup Final. 1981 FA Cup Final. relegation. relegation. English football. English football league system. 1997–98 Football League. Having regained their Premier League status in the early 2000s , the club was purchased in 2008 by Abu Dhabi United Group and has become one of the wealthiest in the world .. Premier League. Premier League. Abu Dhabi United Group. Abu Dhabi United Group. Since 2011 the club have won five major honours , including the Premier League in 2012 and 2014 .. Premier League. Premier League. 2011–12 Premier League. 2013–14 Premier League. By 2015 -- 16 , Manchester City had the fifth-highest revenue in the footballing world with an annual revenue of $ 463.5 million .. Manchester. Manchester. fifth-highest revenue in the footballing world. Deloitte Football Money League. In 2016 , Forbes magazine estimated they were the world 's sixth most valuable football club , worth $ 1.92 billion .. football. association football. Forbes. Forbes
related.