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 : Furioso II (1965 - 1986) is one of the most influential sires in sport horse history. 
Answer : 1986

Answer: When did the life of Furioso II end?


Question: Context : The Ambushers is a novel by Donald Hamilton first published in 1963, continuing the exploits of assassin Matt Helm. 
Answer : Matt Helm

Answer: Which series is The Ambushers apart of?


Question: 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

Answer:
When did Battle of the Barents Sea occur?