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 : ``Slap Bet'' is the ninth episode in season 2 of the popular sitcom How I Met Your Mother. 
Subject : Slap Bet 
Relation : series
Example Output: What series is Slap Bet in?

Example Input: Context : Christine Daaé was born in a town near Uppsala, Sweden. 
Subject : Christine Daaé 
Relation : based on
Example Output: Which is the basis of Christine Daaé?

Example Input: Context : The Marder I ``Marten'' (SdKfz 135) was a German World War II tank destroyer, armed with the 75 mm anti-tank gun. 
Subject : Marder I 
Relation : service entry
Example Output:
What year was Marder I made?