Question: What nationality is the director of film It Happened Only Once?
Sentence (from "Géza von Bolváry"): Géza von Bolváry (full name Géza Maria von Bolváry-Zahn; 26 December 1897 – 10 August 1961) was a Hungarian actor, screenwriter and film director, who worked principally in Germany and Austria.
Relevant evidence: Yes