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.

Example Input: Context : Abell 754 is a galaxy cluster in the constellation Hydra that was formed from the collision of two smaller clusters. 
Question : Which was the constellation for Abell 754?
Example Output: constellation

Example Input: 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?
Example Output: based on

Example Input: Context : Carnival Air Lines was a charter and scheduled airline division of Carnival Cruise Lines started in 1988 after Carnival Cruise Lines purchased Pacific Interstate Airlines. 
Question : What company is Carnival Air Lines part of?
Example Output:
parent company