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.
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Question: Context : Lý Tòng Bá (1931 -- 22 February 2015, Las Vegas, Nevada) is a former brigadier general of the South Vietnamese Army of the Republic of Vietnam. 
Question : What military branch was Lý Tòng Bá in?

Answer: military branch


Question: Context : American astronomer Adriaan van Maanen, Van Maanen 2 was the third white dwarf identified, after 40 Eridani B and Sirius B, and the first that was not a member of a multi-star system. 
Question : What constellation is where Van Maanen 2 is?

Answer: constellation


Question: Context : Kylie Davies (born 25 September 1987) is an English-born Welsh female international footballer. 
Question : What is Kylie Davies's gender?

Answer:
sex or gender