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 : ``Bart the Genius'' is the second episode of The Simpsons' first season, which originally aired on the Fox network on January 14, 1990. 
Subject : Bart the Genius 
Relation : series
What series is Bart the Genius part of?

Context : Tom DeMarco was born in Hazleton, Pennsylvania. 
Subject : Tom DeMarco 
Relation : occupation
What was Tom DeMarco's career?

Context : Hawkmistress! is a fantasy novel written by Marion Zimmer Bradley as part of the Darkover series and is set at the end of Ages of Chaos, in the period of Darkover's history known as the Hundred Kingdoms. 
Subject : Hawkmistress! 
Relation : series

To which series does Hawkmistress! belong?