Detailed Instructions: 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 : 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?