Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Input: Consider 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. 
Answer : Oregon

Output: Which place does Gravity Falls exist in?


Input: Consider Input: Context : Thomas Cahey (April 13, 1870 -- January 5, 1935) was a United States Navy sailor and a recipient of the United States military's highest decoration, the Medal of Honor. 
Answer : United States Navy

Output: Which military did Thomas Cahey serve with?


Input: Consider Input: Context : ``Fredless'' is episode 5 of season 3 in the television show Angel. 
Answer : Angel


Output: Which series is Fredless apart of?