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 : Lisa Cross (born 4 April 1978) is a professional British female bodybuilder. 
Question : What gender class does Lisa Cross belong to?
[EX A]: sex or gender

[EX Q]: Context : At FCM Jammy and Savatier finished the Char 2C prototype, the other nine tanks being built almost simultaneously; all ten were delivered in 1921 and modified by the factory until 1923. 
Question : In which year was the service entry date for Char 2C?
[EX A]: service entry

[EX Q]: Context : A Drunkard's Reformation is a 1909 American drama film directed by D. W. Griffith. 
Question : The main director of A Drunkard's Reformation was who?
[EX A]:
director