Question: In 1992, Ellen Allien became the resident DJ at a club that was founded in which year ?

Context paragraphs:
Ellen Allien: Ellen Allien (born as Ellen Fraatz) is a German electronic musician, music producer, and the founder of BPitch Control music label.  Her album "Stadtkind" was dedicated to the city of Berlin, and she cites the culture of reunified Berlin as one of the main inspirations for her music.  She sings in both German and English.  Her music is best described as a blend of IDM and Techno music, which is dance-floor oriented and has noticeable experimental elements.  She currently lives in Berlin.

Fabric 34: Fabric 34 is a DJ mix compilation album by Ellen Allien, as part of the Fabric Mix Series.

Sool (album): Sool is a 2008 album released by German electronic musician Ellen Allien, released on her BPitch Control music label.  It is her sixth studio album.

Thrills (Ellen Allien album): Thrills is an album by German experimental techno musician Ellen Allien.

Tresor: Tresor (German for safe or vault) is an underground techno nightclub in Berlin and a record label.  The club was founded in March 1991 in the vaults of the former old Wertheim department store at Leipziger Strasse 126-128 in Mitte, the central part of the former East Berlin, next to the famous Potsdamer Platz.  However, the history of the club goes back to 1988 when the electronic music label Interfisch opened the "Ufo Club" in Berlin.  Ufo was the original centre of Berlin house and techno, but due to financial problems that club closed in 1990.

BPitch Control: BPitch Control is a German techno record label founded in 1999 in Berlin by DJ and producer Ellen Allien.  In 1992 she became resident DJ at the legendary Tresor club in Berlin's Potsdamer Platz.  At around the same time, she started her own show on the Berlin radio station Kiss-FM and created her own record label, calling them both Braincandy, before setting Bpitch Control up in 1999.

Stadtkind: Stadtkind is the debut album by German experimental techno musician Ellen Allien.  Released on Allien's own label, BPitch Control in 2001, it was an homage to the city of Berlin, whose post-reunification culture inspired the work.  The album's title means "city child" in German.

Berlinette (album): Berlinette is the second full-length album by German experimental techno producer Ellen Allien, released in 2003 by Allien's label, BPitch Control.  It was generally critically acclaimed, with a very high rating of 8.9 from "Pitchfork".

T. Raumschmiere: Marco Haas (born 1975) is a punk techno DJ known by the stage name T.Raumschmiere.  He has released two albums of aggressive electropop and has worked with Miss Kittin and Ellen Allien, and helped found the Shitkatapult record label.  He is also partly responsible for the mid-2000s resurgence of the schaffel beat.

Orchestra of Bubbles: Orchestra of Bubbles is a collaboration album by Ellen Allien and Apparat.  It was released through BPitch Control on 17 April 2006.

Supporting paragraphs: BPitch Control Tresor
Answer: 1991