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 : Los Premios de la Radio (The Radio Awards) nominated Roberto Tapia as Artist of the year, male artist of the year and the best song with banda ``Mirando al Cielo'' in 2012. 
Question : What gender was Roberto Tapia?

A: sex or gender
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Q: Context : Michiel van Musscher was born in Rotterdam in January 1645 and was later baptized on 27 January. 
Question : What kind of  occupation does Michiel van Musscher have?

A: occupation
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Q: Context : The SIG SG 510 or Sturmgewehr 57 is a selective fire battle rifle manufactured by Schweizerische Industrie Gesellschaft (now SAN Swiss Arms) of Switzerland. 
Question : Which was the official year for the approval of SIG SG 510?

A:
service entry
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