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.

[EX Q]: Context : Rudolf Gerhardt (26 March 1896 -- 10 November 1964) was a highly decorated Oberst in the Wehrmacht during World War II. He was also a recipient of the Knight's Cross of the Iron Cross. 
Question : What award was received by Rudolf Gerhardt?
[EX A]: award received

[EX Q]: Context : Ian Boothby is married to Y The Last Man co-creator and artist Pia Guerra. 
Question : What is Ian Boothby's spouse's name?
[EX A]: spouse

[EX Q]: Context : The BRDM-2 (Boyevaya Razvedyvatelnaya Dozornaya Mashina, Боевая Разведывательная Дозорная Машина, literally ``Combat Reconnaissance/Patrol Vehicle'') is an amphibious armoured patrol car used by Russia and the former Soviet Union. 
Question : What was the year BRDM-2 entered service?
[EX A]:
service entry