Detailed Instructions: 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.
Problem:Context : The Battle of the Barents Sea was a naval engagement on 31 December 1942 between warships of Nazi Germany's Kriegsmarine and British ships escorting convoy JW 51B to Kola Inlet in the USSR.
Answer : 31 December 1942
Solution:
When did Battle of the Barents Sea occur?