Generate a correct and concise answer for the question based on the words in the context.

[EX Q]: Context : By the start of World War II Heinz Hämel had been promoted to Oberscharführer (Technical Sergeant) and was a platoon commander. 
Question : Which war did Heinz Hämel serve in?
[EX A]: World War II

[EX Q]: Context : Betty Fibichová (16 March 1846 -- 20 May 1901) was a Czechoslovak opera singer and the wife of composer Zdeněk Fibich. 
Question : What is Betty Fibichová's spouse's name?
[EX A]: Zdeněk Fibich

[EX Q]: Context : NGC 6027a is a spiral galaxy that is part of Seyfert's Sextet, a compact group of galaxies, which is located in the constellation Serpens. 
Question : What constellation does NGC 6027a belong to?
[EX A]:
Serpens