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.

Context : The Duke of Wellington's Regiment (West Riding) was a line infantry regiment of the British Army, forming part of the King's Division. 
Subject : Duke of Wellington's Regiment 
Relation : military branch
What branch was Duke of Wellington's Regiment part of?

Context : From a calendar entry, Djer is known to have died on a 7 Peret III while Djet began his reign on 22 Peret IV. The reason for the 45 days of interregnum is unknown. 
Subject : Djet 
Relation : spouse
What is Djet's spouse's name?

Context : ``The Van Buren Boys'' is the 148th episode of the sitcom Seinfeld, and name of a fictional New York street gang. 
Subject : The Van Buren Boys 
Relation : series

What series is the episode The Van Buren Boys part of?