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.

[EX Q]: Context : Karl Emil Schäfer (17 December 1891 -- 5 June 1917) was a German pilot during World War I; he became one of the major German flying aces of the war, with 30 confirmed aerial victories. 
Answer : World War I
[EX A]: What was the war that Karl Emil Schäfer fought in?

[EX Q]: Context : Gelnhausen railway (Hungen--Gießen) was opened on 29 December 1869 and Hungen station went into operation. 
Answer : 29 December 1869
[EX A]: When was Hungen station opened?

[EX Q]: Context : Wang Jungzhi (Wang Ch'un Ch'ih) was one of the last people to be executed by the British Army in World War I. He was killed by firing squad on 8 May 1919, six months after the Armistice after being convicted of murder. 
Answer : murder
[EX A]:
Which crime Wang Jungzhi is considered to have commited?