instruction:
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.
question:
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?
answer:
based on


question:
Context : Denis Kulyash (Russian: Денис Куляш; born May 31, 1983) is a professional ice hockey defenceman currently playing for Avangard Omsk of the Kontinental Hockey League (KHL). 
Question : On what team is Denis Kulyash?
answer:
drafted by


question:
Context : Wagon Train is an American Western series that ran on NBC 1957--62 and then on ABC 1962--65, although the network also aired daytime repeats, as Major Adams, Trailmaster and Trailmaster (post-1961 episodes without original series lead Ward Bond), from January 1963 to September 1965. 
Question : What was the original network for Wagon Train?
answer:

original network