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 : In 622, the year of Muhammad's migration to Yathrib (now Medina), Ali risked his life by sleeping in Muhammad's bed to impersonate him and thwart an assassination plot so that Muhammad could escape in safety. 
Question : What is Ali's spouse's name?

Output: spouse


Input: Consider Input: Context : Grace Darling died of tuberculosis in October 1842, aged 26. 
Question : Which medical condition afflicts Grace Darling?

Output: medical condition


Input: Consider Input: Context : The Anatomy Lesson of Dr. Nicolaes Tulp is a 1632 oil painting on canvas by Rembrandt housed in the Mauritshuis museum in The Hague, the Netherlands. 
Question : What is the name of the place where The Anatomy Lesson of Dr. Nicolaes Tulp can be found?


Output: collection