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.

Example Input: 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
Example Output: What was the war that Karl Emil Schäfer fought in?

Example Input: Context : ISO 9241 is a multi-part standard from the International Organization for Standardization (ISO) covering ergonomics of human-computer interaction. 
Answer : International Organization for Standardization
Example Output: Who set the standards for ISO 9241?

Example Input: Context : Mayako Kubo was born in Kobe, Japan, and studied piano at Osaka College of Music. 
Answer : piano
Example Output:
What is the main musical instrument of Mayako Kubo?