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.

Q: Context : PSR J1719-1438 was discovered in 2011 by the High Time Resolution Survey, a radio astronomy search for astronomical objects that rapidly vary in radio brightness, such as pulsars. 
Question : Which constellation is formed by PSR J1719-1438?

A: constellation
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Q: Context : Snježana Kordić's main focal points in research and teaching are grammar, syntax, text linguistics, pragmatics, lexicology, corpus linguistics, sociolinguistics and language policy. 
Question : What city is Snježana Kordić from?

A: residence
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Q: Context : Lee Duck-hee (born 29 May 1998 in Jecheon) is a South Korean junior tennis player. 
Question : What city is Lee Duck-hee associated with?

A:
residence
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