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 : 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

Ex Output:
What year was GER Class Y65 introduced?


Ex Input:
Context : Island at War is a British television series that tells the story of the German occupation of the Channel Islands. 
Subject : Island at War 
Relation : narrative location

Ex Output:
Which place does Island at War exist in?


Ex Input:
Context : HD 88836 is a double star in the southern constellation of Antlia. 
Subject : HD 88836 
Relation : constellation

Ex Output:

Of which constellation is HD 88836 a part?