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 : Leon de Winter was born on 24 February 1954 in Den Bosch, in the southern Netherlands. 
Question : What was Leon de Winter's occupation?

Output: occupation


Input: Consider Input: Context : NGC 6397 is one of the at least 20 globular clusters of our Milky Way Galaxy that have undergone a core collapse, meaning that the core has contracted to a very dense stellar agglomeration. 
Question : What constellation is NGC 6397 located in?


Output: constellation