Question: Oleg Moiseyevich Kagan collaborated with which Soviet pianist who died August 1, 1997?
Sentence (from "Oleg Kagan"): Oleg Moiseyevich Kagan (Russian: Оле́г Моисе́евич Кага́н; 22 November 1946 Yuzhno-Sakhalinsk, Russian SFSR – 15 July 1990, Munich, West Germany) was a Soviet violinist, known for his chamber collaborations with such musicians as pianist Sviatoslav Richter and cellist Natalia Gutman, his wife.
Relevant evidence: Yes