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 : Chorus Gentlemen is a Canadian music television series which aired on CBC Television from 1965 to 1967. 
Question : On what channel did Chorus Gentlemen first appear?
[EX A]: original network

[EX Q]: Context : An article in a Romanian newspaper in the 1950s acknowledged the death of the last direct male descendant of Radu Mihnea Voda, Dumitru Radulescu(Radu)- a church, artist painter. 
Question : What is the gender of Radu Mihnea?
[EX A]: sex or gender

[EX Q]: Context : The Gewehr 98 action, using stripper clip loading with the powerful 7.92×57mm Mauser cartridge, introduced advanced infantry weapon features rapidly adopted in the Anglo-American Pattern 1914 Enfield/M1917 Enfield and the Japanese Arisaka Type 38/Type 99. 
Question : What year was Gewehr 98 introduced?
[EX A]:
service entry