You will be given a context, a subject and a relation. Your task is to generate a question based on the subject and relation. The generated question should include the given subject. Try to use a minimum number of words that are not present in either context, subject or relation while generating question.

Ex Input:
Context : Columbus Nova is an investment company founded in 2000 and centered in New York City. 
Subject : Columbus Nova 
Relation : parent company

Ex Output:
Which company is the parent company of Columbus Nova?


Ex Input:
Context : The Stoner 63, also known as the M63, XM22, XM23, XM207 or the Mk 23 Mod 0 machine gun, is an American modular weapons system designed by Eugene Stoner in the early 1960s. 
Subject : Stoner 63 
Relation : service entry

Ex Output:
In what year did Stoner 63 enter service?


Ex Input:
Context : Alex Lees (11 July 1911 -- 22 April 2009) was a British World War II veteran, who, as a POW, took part in planning the Great Escape. 
Subject : Alex Lees 
Relation : conflict

Ex Output:

What was the war that Alex Lees fought in?