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.

[Q]: Context : Narcissus in Chains is the tenth book in the Anita Blake: 
Subject : Narcissus in Chains 
Relation : series
[A]: What is the series that Narcissus in Chains is a part of?


[Q]: Context : Delta Centauri (δ Cen, δ Centauri) is a star in the southern constellation of Centaurus. 
Subject : Delta Centauri 
Relation : constellation
[A]: Which constellation is Delta Centauri a part of?


[Q]: Context : The Swedish lute (Swedish: svensk luta) is a musical instrument developed from the early cittern, with a theorbo'ed neck with several bass strings running offset from the fretboard. 
Subject : Swedish lute 
Relation : based on
[A]:
Which is the basis of Swedish lute?