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

[Q]: Context : The GCR Class 1 was a class of steam locomotives designed by John G. Robinson for the Great Central Railway, and introduced to service between December 1912 and 1913. 
Question : What was the year that GCR Class 1 entered service?
[A]: December 1912


[Q]: Context : Gemeinhardt manufactures the flute components (headjoint, body, footjoint, keys) in Elkhart, Indiana USA then sends them to Angel Industries to assemble them. 
Question : What is the product of Gemeinhardt?
[A]: flute


[Q]: Context : Horst Rudat (born 3 May 1920 in Wirtkallen, district Insterburg, East Prussia; died 31 August 1982 in Laaber/Waldelzerberg) was a German World War II Luftwaffe bomber pilot. 
Question : In what war was Horst Rudat in?
[A]:
World War II