Question: What nationality is the director of film Double Circle (Film)?
Sentence (from "Nikola Tanhofer"): After two less successful films, the psychological war drama "Osma vrata" (1959) and "Sreća dolazi u 9" (1961), the first Yugoslavian feature film with fantastical elements, he directed two somewhat more successful ones, "Dvostruki obruč" (1963) and "Svanuće" (1964).
Relevant evidence: No