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 : John Relyea is a 1998 graduate of the Curtis Institute of Music in Philadelphia. 
Subject : John Relyea 
Relation : educated at
Example Output: The college John Relyea attended was what?

Example Input: Context : Riley Franklin McConnell was born 22 July 1884 at Gate City, Virginia. 
Subject : Riley Franklin McConnell 
Relation : military branch
Example Output: In what military branch did Riley Franklin McConnell serve?

Example Input: Context : The United Defense M42, sometimes known as the Marlin for the manufacturer, was an American submachine gun in World War II. It was produced from 1942 to 1943 by United Defense Supply Corp. (a government-formed company specifically tasked with weapons development) for possible issue as a replacement for the Thompson submachine gun and was used by agents of the Office of Strategic Services (OSS). 
Subject : United Defense M42 
Relation : service entry
Example Output:
In what year did United Defense M42 enter service?