TASK DEFINITION: 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.
PROBLEM: 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

SOLUTION: In what year did Stoner 63 enter service?

PROBLEM: Context : The Duke of Wellington's Regiment (West Riding) was a line infantry regiment of the British Army, forming part of the King's Division.
Subject : Duke of Wellington's Regiment
Relation : military branch

SOLUTION: What branch was Duke of Wellington's Regiment part of?

PROBLEM: Context : Elmer Charles Bigelow was born in Hebron, Illinois, on July 12, 1920.
Subject : Elmer Charles Bigelow
Relation : military branch

SOLUTION:
Which armed forces did Elmer Charles Bigelow serve?