Question: Which part of Germany which became part of the Soviet sector in 1945 has a theatre company which was established by playwright Bertolt Brecht and his wife Helene Weigel in 1949?
Sentence (from "Berliner Ensemble"): The Berliner Ensemble (] ) is a German theatre company established by playwright Bertolt Brecht and his wife, Helene Weigel in January 1949 in East Berlin.
Relevant evidence: Yes