Question: What is the population of the city in which Staffan Scheja was the awardee at the international Ferruccio Busoni International Piano Competition in 1975?
Sentence (from "Bolzano"): Bolzano ( ; ] ,    or ] ; German: "Bozen" (formerly "Botzen"), ] ; Ladin: "Balsan" or "Bulsan"; Latin: "Bauzanum" ) is the capital city of the province of South Tyrol in northern Italy.
Relevant evidence: No