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.

Example Input: Context : The BMP-3 is designed and produced by the Kurganmashzavod (``Kurgan Machine Building Plant'') some variants however are built by the Rubtsovsk Machine Building Plant (RMZ), for example the BRM-3K. 
Question : What year was BMP-3 introduced?
Example Output: service entry

Example Input: Context : Oleg Dozmorov was born in Yekaterinburg, Russia (former part of the Soviet Union) in 1974. 
Question : What was Oleg Dozmorov's career?
Example Output: occupation

Example Input: Context : Karl-Erich Berg (30 May 1919 -- 10 June 2001) was a highly decorated Hauptmann in the Wehrmacht during World War II. He was also a recipient of the Knight's Cross of the Iron Cross. 
Question : What was the award received by Karl-Erich Berg?
Example Output:
award received