Question: Where is the football club that Michael Langer plays for originally from?

full_context: Document 1: Bastian Schweinsteiger: Bastian Schweinsteiger (] ; born 1 August 1984) is a German professional footballer who plays as a midfielder for Major League Soccer club Chicago Fire. A right-footed player, he usually plays as central midfielder. Earlier in his career, he primarily played as a wide midfielder.
Document 2: FC Schalke 04: Fußballclub Gelsenkirchen-Schalke 04 e. V., commonly known as FC Schalke 04 (] ), Schalke or abbreviated as S04 (] ), is a professional German association-football club and multi-sports club originally from the district of Gelsenkirchen, North Rhine-Westphalia. The "04" in the club's name derives from its formation in 1904. Schalke has long been one of the most popular professional football teams and multi-sports club in Germany, even though major successes have been rare since the club's heyday in the 1930s and early 1940s. Schalke play in the Bundesliga, the top tier of the German football league system. As of December 2015, the club has 140,000 members, making it the second-largest sports club in Germany and the sixth-largest sports club in the world in terms of membership. Other activities offered by the club include athletics (track and field), basketball, handball, table tennis, winter sports and eSports.
Document 3: Borussia Dortmund: Ballspielverein Borussia 09 e.V. Dortmund, commonly known as Borussia Dortmund ] , BVB, or simply Dortmund, is a German sports club based in Dortmund, North Rhine-Westphalia ("Borussia" is the Latin equivalent of Prussia). The football team is part of a large membership-based sports club with more than 145,000 members, making BVB the second largest sports club by membership in Germany. Dortmund plays in the Bundesliga, the top tier of the German football league system. Dortmund is one of the most successful clubs in German football history.
Document 4: Schalke 04 Basketball: Schalke 04 Basketball is a German professional basketball team club in Gelsenkirchen. The team currently plays in the ProB, the German national third division. It is the basketball section of FC Schalke 04.
Document 5: 2017–18 FC Schalke 04 season: The 2017–18 FC Schalke 04 season is the 114th season in the football club's history and 27th consecutive and 50th overall season in the top flight of German football, the Bundesliga, having been promoted from the 2. Bundesliga in 1991. In addition to the domestic league, Schalke 04 are also participating in this season's edition of the domestic cup, the DFB-Pokal. This is the 17th season for Schalke in the VELTINS-Arena, located in Gelsenkirchen, North Rhine-Westphalia. The season covers a period from 1 July 2017 to 30 June 2018.
Document 6: David Alaba: David Olatukunbo Alaba (born 24 June 1992) is an Austrian professional footballer who plays for German club Bayern Munich and the Austria national team. He holds Austria's record as the youngest player to play for their senior national team, debuting for them in 2009 as a 17-year-old.
Document 7: Michael Ballack: Michael Ballack (] ; born 26 September 1976) is a retired German footballer. He is among the top goal scorers in the history of the German national team. Ballack wore the number 13 shirt for every team he has played for, save for 1. FC Kaiserslautern. He was selected by Pelé as one of FIFA's 125 Greatest Living Players, and as the UEFA Club Midfielder of the Year in 2002. He won the German Footballer of the Year award three times – in 2002, 2003 and 2005. Ballack was known for his passing range, powerful shot, physical strength and commanding presence in midfield.
Document 8: FC Schalke 04 (League of Legends): FC Schalke 04 is an eSports team competing in the European League of Legends Championship Series (EU LCS), the top level of professional "League of Legends" in Europe. The team is referred to by themselves as Schalke 04 Esports to distinguish them from their parent organisation's football club. Matches are played in the Am Studio 20D in Adlershof, Berlin.
Document 9: Michael Zorc: Michael Zorc (born 25 August 1962) is a German retired footballer who played as a central midfielder.
Document 10: Michael Sollbauer: Michael Sollbauer (born May 15, 1990) is an Austrian football midfielder who currently plays for Wolfsberger AC.
Document 11: Míchel Salgado: Miguel Ángel "Míchel" Salgado Fernández (born 22 October 1975) is a retired Spanish professional footballer who played as a right back.
Document 12: 1. FC Kaiserslautern: 1. Fußball-Club Kaiserslautern e. V., also known as 1. FCK, FCK or simply 1. FC Kaiserslautern (] ), is a sports club based in Kaiserslautern, Rhineland-Palatinate. It is internationally known, especially through its football division. On 2 June 1900, Germania 1896 and FG Kaiserslautern merged to create FC 1900. In 1909, the club went on to join FC Palatia (founded in 1901) and FC Bavaria (founded in 1902) to form FV 1900 Kaiserslautern. In 1929, they merged with SV Phönix to become FV Phönix-Kaiserslautern before finally taking on their current name three years later. As a founding member of the Bundesliga the FCK played from 1963 to 1996 through in the first league.
Document 13: Michael Langer: Michael Langer (born 6 January 1985 in Bregenz, Vorarlberg) is an Austrian footballer, who plays for FC Schalke 04.
Document 14: Mario Götze: Mario Götze (] ; born 3 June 1992) is a German professional footballer who plays as an attacking midfielder for German Bundesliga club Borussia Dortmund and the Germany national team. Although his favoured position is that of a playmaker. Götze possesses speed, technique, dribbling skills, and playmaking capabilities. In 2010, German Football Association's then technical director Matthias Sammer described Götze as "one of the best talents Germany has ever had."
Document 15: SV Werder Bremen: Sportverein Werder Bremen von 1899 e. V. (] ), commonly known as Werder Bremen, is a German sports club located in Bremen in the northwest German federal state Free Hanseatic City of Bremen. The club was founded in 1899 and has grown to 40,400 members. It is best known for its association football team.
ground_truth: Gelsenkirchen, North Rhine-Westphalia