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 : ISO 3166-2:HK is the entry for Hong Kong in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Answer : International Organization for Standardization
Example Output: Who set the standards for ISO 3166-2:HK?

Example Input: Context : Charles Calvin Rogers (September 6, 1929 -- September 21, 1990) was a United States Army officer and a recipient of America's highest military decoration--the Medal of Honor--for his actions in the Vietnam War. 
Answer : Vietnam War
Example Output: In which war did Charles Calvin Rogers fought?

Example Input: Context : Karl-Heinz Ertel (26 November 1919 -- 25 January 1993) was a SS-Hauptsturmführer of the Reserves, in the Waffen-SS during World War II who was awarded the Knight's Cross of the Iron Cross, to recognize extreme battlefield bravery or successful military leadership by Nazi Germany during World War II. 
Answer : World War II
Example Output:
Which war did Karl-Heinz Ertel participate in?