TASK DEFINITION: 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.
PROBLEM: 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

SOLUTION: What was the war that Karl Emil Schäfer fought in?

PROBLEM: Context : Museum August Kestner, previously Kestner-Museum, is a museum in Hanover, Germany, founded in 1889. 
Answer : 1889

SOLUTION: When did Museum August Kestner open?

PROBLEM: Context : Tjalie Robinson is the main alias of the Indo (Eurasian) intellectual and writer Jan Boon (born Nijmegen, 10 January 1911; died The Hague, 22 April 1974) also known as Vincent Mahieu. 
Answer : writer

SOLUTION:
What kind of  occupation does Tjalie Robinson have?