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 : Dr. Knock Jean Brochard:
Subject : Dr. Knock
Relation : director

Ex Output:
Who id the director for Dr. Knock?

Ex Input:
Context : We Didn't Mean to Go to Sea is the seventh book in Arthur Ransome's Swallows and Amazons series of children's books.
Subject : We Didn't Mean to Go to Sea
Relation : series

Ex Output:
What is the series called that We Didn't Mean to Go to Sea belongs to?

Ex Input:
Context : The M79 grenade launcher is a single-shot, shoulder-fired, break-action grenade launcher that fires a 4046mm grenade, which uses what the US Army calls the High-Low Propulsion System to keep recoil forces low, and first appeared during the Vietnam War.
Subject : M79 grenade launcher
Relation : service entry

Ex Output:
What year was M79 grenade launcher made?