Question: Karl Kevin Marginson, is an English football manager and former player, who played in the Football League for Rotherham United, and since 2005, he has been the manager of F.C. United of Manchester, a semi-professional football club based in Moston, Manchester, in which UK country? 

Context paragraphs:
List of F.C. United of Manchester seasons: F.C. United of Manchester is an English semi-professional association football club based in Moston, Manchester, that competes in the National League North.  The club was formed in June 2005 by supporters of Manchester United opposed to American businessman Malcolm Glazer's takeover of that club.  F.C. United are owned and democratically run by their supporters and operate as a community benefit society on a one-member, one vote basis.

Kings Langley F.C.: Kings Langley Football Club are a semi-professional association football club in the village and civil parish of Kings Langley, Hertfordshire, England.  The club have spent the majority of their history in the Hertfordshire County League, they joined the Spartan South Midlands Football League in 2001, winning the Premier Division in the 2015-16 season and are currently members of the Southern League Premier Division - the seventh tier of the English football league system, following a third consecutive promotion in 2016 when they became champions of the Southern League Division One South.  In doing so, Kings Langley join Truro F.C., Chester F.C., F.C. United of Manchester and Gretna F.C. as the only clubs in the United Kingdom with three or more successive promotions.  They are also unofficially the highest-ranked village football club in England.

History of Rotherham United F.C.: The history of Rotherham United F.C. traces its roots back to 1870.  The club was formed as Thornhill Football Club (later Thornhill United).  For many years the leading team in the area was Rotherham Town F.C., who spent three seasons in the Football League while Thornhill United were still playing in the Sheffield & Hallamshire League.  By the turn of the century, however, Rotherham Town had resigned from the Football League and gone out of business; a new club of the same name later joined the Midland League.  Meanwhile, Thornhill's fortunes were on the rise to the extent that in 1905 they laid claim to being the pre-eminent club in the town and changed their name to Rotherham County For a period both clubs competed in the Midland League, finishing first and second in 1911–12.  When the Football League was resumed in 1919, Rotherham County applied successfully to join for the first time while Rotherham Town's application was turned down but they were allowed back into the Midland League.  The first league game took place at Millmoor and County beat Nottingham Forest 2-0 but it proved to be a season of struggle and they finished in 17th position out of 22.  When it was decided to introduce Division Three, Town were hopeful of becoming Rotherham's second League club but they received just 13 votes, not enough to gain admittance.

Rotherham United F.C.: Rotherham United Football Club, nicknamed The Millers, is a professional association football club based in Rotherham, South Yorkshire, England.  They compete in League One, the third tier of the English football league system, following their relegation from the Championship in the 2016–17 season.

List of Rotherham United F.C. seasons: Rotherham United Football Club is an association football club based in Rotherham, South Yorkshire.  The club was formed in 1925 as a merger between Rotherham Town and Rotherham County when it was decided that having two professional clubs in the town was not sustainable.  After the merger, the club was elected to play in the Football League Third Division North.  United played in the Third Division North until 1950–51, when they were champions of the division and were promoted to the Second Division.  During their first spell in the Second Division the club reached the fifth round of the FA Cup twice and were runners up in the inaugural Football League Cup, which is the furthest they have reached in these competitions.  Their furthest Football League Trophy run saw the club win it in the 1995–96 season defeating Shrewsbury Town 2–1 in the final.

Karl Marginson: Karl Kevin Marginson (born 11 November 1970) is an English football manager and former player, who played in the Football League for Rotherham United.  He has been the manager of F.C. United of Manchester since 2005.

Curzon Ashton F.C.: Curzon Ashton Football Club is a semi-professional football club based in the market town of Ashton-under-Lyne, Greater Manchester, England, that competes in the National League North, the sixth-highest division overall in the English football league system, and are members of the Manchester County Football Association.  Nicknamed "the Nash", the club was founded in 1963 and moved to its current stadium, Tameside Stadium, in 2005.

Rotherham Town F.C. (1899): Rotherham Town F.C. was an English football club from Rotherham, Yorkshire.  They merged with rivals Rotherham County in 1925 to form Rotherham United.

F.C. United of Manchester: F.C. United of Manchester is a semi-professional football club based in Moston, Manchester, England.  The club competes in the National League North , the sixth tier of the English football league system, and play their home matches at Broadhurst Park.

Rotherham County F.C.: Rotherham County F.C. was an English football club based in Rotherham, South Yorkshire.  They spent a number of years in the Football League before merging with rivals Rotherham Town in 1925 to form Rotherham United.

Supporting paragraphs: Karl Marginson F.C. United of Manchester
Answer: England