Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
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Question: Context : Zoltán Várkonyi (13 May 1912 -- 10 April 1979) was a Hungarian actor and film director. 
Answer : actor

Answer: What kind of  occupation does Zoltán Várkonyi have?


Question: Context : Trace of Stones (German: Spur der Steine) is a 1966 East German film by Frank Beyer. 
Answer : Spur der Steine

Answer: The Trace of Stones is based upon what?


Question: Context : Boston and Maine 3713 is a P-4a class 4-6-2 Pacific type steam locomotive built by the Lima Locomotive Works for the Boston and Maine Railroad in December 1934. 
Answer : December 1934

Answer:
What year was Boston and Maine 3713 made?