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.

Example Input: Context : In 1961, the first M79 grenade launchers were delivered to the US Army. 
Subject : M79 grenade launcher 
Relation : service entry
Example Output: Which was the official year for the approval of M79 grenade launcher?

Example Input: Context : The GER Class Y65 was a class of twelve 2-4-2T steam locomotives designed by S. D. Holden and built by the company's Stratford Works in 1909--1910. 
Subject : GER Class Y65 
Relation : service entry
Example Output: What year was GER Class Y65 introduced?

Example Input: Context : Benjamin Abrahão Botto was murdered during the Estado novo period in Brazil. 
Subject : Benjamin Abrahão Botto 
Relation : date of death
Example Output:
On which date did Benjamin Abrahão Botto die?