instruction:
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.
question:
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
answer:
What year was GER Class Y65 introduced?


question:
Context : Jaroslav Drobný was also a member of the Czechoslovakian national ice hockey team which won the gold medals at the 1947 World Ice Hockey Championships in Prague. 
Subject : Jaroslav Drobný 
Relation : residence
answer:
What city is Jaroslav Drobný from?


question:
Context : Demons of the Mind is a 1972 British horror film, directed by Peter Sykes and produced Anglo-EMI, Frank Godwin Productions and Hammer Film Productions. 
Subject : Demons of the Mind 
Relation : production company
answer:

What production company was involved in Demons of the Mind?