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 : Aner Shalev (born 24 January 1958) is a professor at the Einstein Institute of Mathematics at the Hebrew University of Jerusalem, and a writer. 
Question : What is the name university that educated Aner Shalev?

Output: educated at


Input: Consider Input: Context : Christian de Boissieu received a Ph. D in economics in 1973 at the University of Paris-I Panthéon-Sorbonne. 
Question : What is the name university that educated Christian de Boissieu?

Output: educated at


Input: Consider Input: Context : Elizabeth R. Varon is an American historian, and Langbourne M. Williams Professor of American History at the University of Virginia. 
Question : What was Elizabeth R. Varon's career?


Output: occupation