Question: Which country the director of film The Sinner (1951 Film) is from?
Sentence (from "Willi Forst"): As a debonair actor he was a darling of the German-speaking film audiences, as a director, one of the most significant makers of the Viennese period musical melodramas and comedies of the 1930s known as "Wiener Filme".
Relevant evidence: No