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.
Input: Context : The series follows adventures of Dipper Pines (voiced by Jason Ritter) and his twin sister Mabel (voiced by Kristen Schaal) in the fictional town of Gravity Falls, Oregon, while on summer vacation.
Subject : Gravity Falls
Relation : narrative location
Output:
Which place does Gravity Falls exist in?