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 Input:
Context : Luigi Gorrini, MOVM (12 July 1917 -- 8 November 2014), was an Italian World War II fighter pilot in the Regia Aeronautica and in the Aeronautica Nazionale Repubblicana. 
Question : Which war did Luigi Gorrini participate in?

Ex Output:
conflict


Ex Input:
Context : Designated MA-31 in US service, the first launch of the missile took place in August 1996. 
Question : In which year was the service entry date for MA-31?

Ex Output:
service entry


Ex Input:
Context : Arsène Lupin, 26 60-minute episodes (1971, 1973--1974) with Georges Descrières (Lupin), Arsène Lupin at the Internet Movie Database. 
Question : What is Arsène Lupin's sex?

Ex Output:

sex or gender