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.

Input: Consider Input: 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?

Output: educated at


Input: Consider Input: Context : Veronika Martinek (born 3 April 1972) is a former professional female tennis player playing for Germany. 
Question : Which sex is Veronika Martinek?

Output: sex or gender


Input: Consider Input: Context : ``How Betty Got Her Grieve Back'' is the season two premiere of dramedy series Ugly Betty. 
Question : What is the series that How Betty Got Her Grieve Back is a part of?


Output: series