Question: Who was the chief rider at a traditional riding school for Lipizzan horses in the 1900s?
Sentence (from "Spanish Riding School"): The Spanish Riding School (German: "Spanische Hofreitschule" ) of Vienna, Austria, is a traditional riding school for Lipizzan horses, which perform in the Winter Riding School (Winterreitschule) in the Hofburg.
Relevant evidence: Yes