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.

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?
based on

Context : Ken Liu (born 1976) is an American science-fiction and fantasy writer, poet, lawyer, and computer programmer. 
Question : Which award was honoured to Ken Liu?
award received

Context : HD 77370, also called b² Carinae (b² Car), is a star in the constellation Carina. 
Question : The star HD 77370 is part of what constellation?

constellation