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 : What later became known as the Whirlpool Galaxy was discovered on October 13, 1773 by Charles Messier while hunting for objects that could confuse comet hunters, and was designated in Messier's catalogue as M51. 
Question : The star Whirlpool Galaxy is part of the constellation known as what?
[EX A]: constellation

[EX Q]: Context : Earl Derr Biggers (August 26, 1884 -- April 5, 1933) was an American novelist and playwright. 
Question : What is the university where Earl Derr Biggers went?
[EX A]: educated at

[EX Q]: Context : Fu Pi refused and tried to intercept them, but suffered a major defeat, in which Wang Yong and the major general Juqu Jushizi (沮渠俱石子) were killed, and most of Fu Pi's officials and his wife Empress Yang were captured. 
Question : What is Fu Pi's spouse's name?
[EX A]:
spouse