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 : Ezra Hendrickson (born 16 January 1972 in Layou, St. Vincent) is a retired Vincentian footballer. 
Question : What city is Ezra Hendrickson associated with?

A: residence
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Q: Context : Norway - Upgraded to NASAMS 2. 
Question : Which was the official year for the approval of NASAMS?

A: service entry
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Q: Context : Joseph Nicholson Barney was born in 1818 in Maryland, son of John Barney and Elizabeth Nicholson Hindman. 
Question : What war or battle involved Joseph Nicholson Barney?

A:
conflict
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