Question: In what city is the main campus of the university where the Opera Theatre of Saint Louis presents its performances?
Sentence (from "Stephen Paulus"): His best-known piece is his 1982 opera "The Postman Always Rings Twice", one of several operas he composed for the Opera Theatre of St. Louis, which prompted "The New York Times" to call him "a young man on the road to big things".
Relevant evidence: No