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.

[EX Q]: Context : Egor Gerasimov (Belarusian: ; Russian: ; born 11 November 1992 in Minsk) is a Belarusian tennis player.
Answer : Minsk
[EX A]: What city is Egor Gerasimov associated with?

[EX Q]: Context : ''Restful Place'' focuses on a curved limestone bench and above it is an arched bronze and glass canopy.
Answer : limestone
[EX A]: What is the surface of Restful Place made of?

[EX Q]: Context : The PTRD-41 (Shortened from Russian, ProtivoTankovoye Ruzhyo Degtyaryova; 1941 ;''Degtyaryov Anti-Tank Rifle'') was an anti-tank rifle produced and used from early 1941 by the Soviet Red Army during World War II. It was a single-shot weapon which fired a 14.5114mm round.
Answer : 1941
[EX A]:
What was the year that PTRD entered service?