Complex sentence: At the same time Vladimir Kenigson starred in the Mikheil Chiaureli's film "The Fall of Berlin", which earned the role of the nazi general Krebs Stalin Prize by Joseph Stalin himself, who was delighted with his performance.
Split into simpler sentences: At the same time Vladimir Kenigson starred in the Mikheil Chiaureli's film "The Fall of Berlin", where he played the role of the Nazi general Krebs. For this, Kenigson was awarded the Stalin Prize by Joseph Stalin himself, who was delighted with his performance.