Question: What great artist that Natalia Troitskaya sang with, did a duet with Freddie Mercury that became one of the two official theme songs for the 1992 Olympics?
Sentence (from "Natalia Troitskaya"): Natalia Troitskaya (1951 – 9 April 2006) was a Russian operatic soprano who had a major international career during the 1980s and early 1990s.
Relevant evidence: No