Classify the relation of question with context to one of these categories: 1) award received, 2) based on, collection, 3) conflict, 4) constellation, 5) convicted of, 6) date of death, 7) director, 8) drafted by, 9) educated at, 10) medical condition, 11) military branch, 12) narrative location, 13) occupation, 14) original network, 15) parent company, 16) point in time, 17) production company, 18) residence, 19) series, 20) service entry, 21) sex or gender, 22) spouse, 23) standards body question.

Input: Consider Input: Context : Filmed primarily in Canada with a Canadian director (Ted Kotcheff), Switching Channels features many popular Canadian character actors in supporting roles: 
Question : The Switching Channels is based upon what?

Output: based on


Input: Consider Input: Context : Sponsa de Libano (The Bride of Lebanon) is a painting by the Pre-Raphaelite artist Edward Burne-Jones dated 1891. 
Question : What is the name of the place where Sponsa de Libano can be found?

Output: collection


Input: Consider Input: Context : The Dark Hills Divide (Book 1) Beyond the Valley of Thorns (Book 2) The Tenth City (Book 3) Into the Mist (Prequel) Stargazer (Patrick Carman) (Book 4) 
Question : Which series is The Dark Hills Divide a part of?


Output: series