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 : Born Robert Alton Hart in Bennington, Vermont, Alton studied dance with Ralph McKernan in Springfield, Massachusetts and spent his summers in New York studying with Bert French and Mikhail Mordkin, formerly of the Bolshoi Ballet and Sergey Diaghilev's Ballets Russes. 
Question : What kind of  occupation does Robert Alton have?
occupation

Context : Greed in the Sun (French: Cent mille dollars au soleil) is a 1964 French-Italian adventure film directed by Henri Verneuil. 
Question : Who was Greed in the Sun directed by?

director