Question: What is the altitude of the castle that sits atop of a hill in the city where the history of rail transport in Austria began?
Sentence (from "Hohensalzburg Castle"): Hohensalzburg Castle (German: "Festung Hohensalzburg" , literally "High Salzburg Fortress") sits atop the Festungsberg, a small hill in the Austrian city of Salzburg.
Relevant evidence: No