Question: In 1992, Ellen Allien became the resident DJ at a club that was founded in which year ?
Sentence (from "Tresor"): 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.
Relevant evidence: Yes