Question: Where was the last team coached by Christian Preußer based?

Context paragraphs:
Christian Preußer: Christian Preußer (born 23 January 1984) is a German football manager who last coached Rot-Weiß Erfurt.

The Contender Challenge: UK vs. USA: The Contender Challenge: UK vs. USA was a series of boxing matches on 30 March 2007, held at Metro Radio Arena, Newcastle, England, featuring 6 boxers from the US reality television shows "The Contender" and "The Contender 2".  The Contenders, in a team coached by Sugar Ray Leonard, took on 6 boxers from the UK, all promoted by Frank Warren, and coached by Barry McGuigan.  The winning team was awarded the "Sugar Ray Leonard Cup," not unlike the Ryder Cup in Golf

1986–87 Phoenix Suns season: The 1986–87 Phoenix Suns season was the 18th season for the Phoenix Suns of the National Basketball Association.  The Suns started their 14th season under head coach John MacLeod, going 22–34.  Suns management decided to replace the longstanding MacLeod with Dick Van Arsdale, a former Suns player from the Finals team coached then by MacLeod.  With Van Arsdale, the Suns would finish the season going 14–12 in their last 26 games of the regular season.  All Suns home games were played at Arizona Veterans Memorial Coliseum.

1990–91 UNLV Runnin' Rebels basketball team: The 1990–91 UNLV Runnin' Rebels basketball team represented the University of Nevada, Las Vegas in NCAA Division I men's competition in the 1990–91 season.  The Runnin' Rebels, coached by Jerry Tarkanian, entered the season as defending national champions and entered the 1991 NCAA tournament unbeaten, but lost in the national semifinal to eventual champions Duke when Anderson Hunt's desperation three in the final seconds bounced off the backboard and into the hands of a Duke player, Bobby Hurley.  They had been the last team to finish the regular season unbeaten before St. Joseph's did it in 2004.  They were the last team to enter the NCAA tournament unbeaten until Wichita State did it in 2014 and Kentucky in 2015.

Lithuania women's national softball team: The Lithuania women's national softball team is the national team of the Lithuania.  It is governed by the Lietuvos beisbolo asociacija.  Team coached by Romanas Paskočimas.

1898–99 Wisconsin Badgers men's basketball team: The 1898–1899 Wisconsin Badgers men's basketball team represented University of Wisconsin–Madison.  Wisconsin Badger basketball began in December 1898 with the formation of its first team coached by Dr. James C. Elsom.  The team played their home games at the Red Gym in Madison, Wisconsin and was a member of the Western Conference.

1949 Notre Dame Fighting Irish football team: The 1949 Notre Dame Fighting Irish football team represented the University of Notre Dame during the 1949 college football season.  The Irish, coached by Frank Leahy, ended the season with 10 wins and no losses, winning the national championship.  The 1949 team became the seventh Irish team to win the national title and the third in four years.  Led by Heisman winner Leon Hart, the Irish outscored their opponents 360-86.  The 1949 team is the last team in what is considered to be the Notre Dame Football dynasty, a stretch of games in which Notre Dame went 36-0-2 and won three national championships and two Heisman Trophies.  The Irish squad was cited by Sports Illustrated as the part of the second best sports dynasty (professional or collegiate) of the 20th century<ref name="CNN/SI ND Dynasty"> </ref> and second greatest college football dynasty. <ref name="CNN/SI ND Dynasty 2"> </ref>

Frank Butterworth: Frank Seiler Butterworth, Sr. (September 21, 1870 – August 21, 1950) was an American football player and coach.  Butterworth attended Yale University where he was a fullback on Yale's football teams and a member of the Skull and Bones society.  He was famously enucleated by Bert Waters during "The Bloodbath in Hampden Park".  He was selected as an All-American in 1893 and 1894.  Butterworth was also a track star and boxer at Yale.  After his college career was over, Butterworth coached football at the University of California, Berkeley (1895–1896) and Yale (1897–1898).  The 1897 Yale football team coached by Butterworth went undefeated with two ties, against Army and Harvard.

Ítalo Díaz: Ítalo Andrés Díaz Muñoz (] , born 21 June 1971) is a Chilean former footballer and current manager.  His last team coached was Deportes Santa Cruz.

FC Rot-Weiß Erfurt: FC Rot-Weiß Erfurt is a German association football club based in Erfurt, Thuringia.

Supporting paragraphs: Christian Preußer FC Rot-Weiß Erfurt
Answer: Erfurt, Thuringia