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.

[EX Q]: Context : Nightbreed (also Night Breed on publicity material, or Clive Barker's Nightbreed) is a 1990 American dark fantasy horror film written and directed by Clive Barker, based on his 1988 novella Cabal, and starring Craig Sheffer, Anne Bobby, David Cronenberg, Charles Haid, Hugh Quarshie, and Doug Bradley. 
Question : The Nightbreed is based upon what?
[EX A]: based on

[EX Q]: Context : New York Goes to Work is a reality VH1 series that first premiered on May 4, 2009. 
Question : What was the original network for New York Goes to Work?
[EX A]: original network

[EX Q]: Context : The BBC adapted The Warden and its sequel, Barchester Towers, into the miniseries The Barchester Chronicles (1982). 
Question : To which series does The Warden belong?
[EX A]:
series