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.

[Q]: Context : The Boeing KC-767 is a military aerial refueling and strategic transport aircraft developed from the Boeing 767-200ER.
Answer : Boeing 767-200ER
[A]: The Boeing KC-767 is based upon what?

[Q]: Context : John Hunt Morgan (June 1, 1825 -- September 4, 1864) was a Confederate general in the American Civil War.
Answer : American Civil War
[A]: Which war did John Hunt Morgan serve in?

[Q]: Context : Andres Barba (born Madrid, 1975) is a Spanish writer.
Answer : writer
[A]:
What kind of occupation does Andres Barba have?