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 : William de St Croix was educated at Eton and St John's College, Cambridge, graduating in 1843. 
Question : What university did William de St Croix attend?
educated at

Context : Denis Kulyash (Russian: Денис Куляш; born May 31, 1983) is a professional ice hockey defenceman currently playing for Avangard Omsk of the Kontinental Hockey League (KHL). 
Question : On what team is Denis Kulyash?
drafted by

Context : The Fort-12 (Ukrainian: Форт-12) is a semi-automatic pistol which was designed in the late 1990s by Ukrainian firearms designer RPC Fort. 
Question : What year did Fort-12 come into use?

service entry