TASK DEFINITION: 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.
PROBLEM: Context : Delta Centauri ( Cen, Centauri) is a star in the southern constellation of Centaurus.
Subject : Delta Centauri
Relation : constellation

SOLUTION: Which constellation is Delta Centauri a part of?

PROBLEM: Context : That same month, Singer was approached by Warner Bros. to pitch his idea for Superman Returns, as he was preparing to leave for Hawaii on a short vacation with his X2 writers Michael Dougherty and Dan Harris.
Subject : Superman Returns
Relation : production company

SOLUTION: What studio produced Superman Returns?

PROBLEM: Context : Caillou books have been made since 1989 by Chouette Publishing Inc. The series was originally broadcast in French in Canada, and the episodes were later translated into English, and re-runs in English began on PBS and PBS Kids Sprout in the United States.
Subject : Caillou
Relation : original network

SOLUTION:
Which channel broadcast Caillou?