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.

Input: Consider Input: Context : Fritz X was a nickname used both by Allied and Luftwaffe personnel. 
Subject : Fritz X 
Relation : service entry

Output: What year did Fritz X come into use?


Input: Consider Input: Context : The Grim Adventures of Billy & Mandy is a fighting game based on the television series of the same name. 
Subject : The Grim Adventures of Billy & Mandy 
Relation : original network

Output: What was the station that aired The Grim Adventures of Billy & Mandy?


Input: Consider Input: Context : Blacula was followed by the sequel Scream Blacula Scream in 1973 and inspired a small wave of blaxploitation themed horror films. 
Subject : Blacula 
Relation : production company


Output: What production company was involved in Blacula?