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.

Example Input: Context : Kyla began her career in 2000 under OctoArts EMI Philippines and rose to prominence with the release of her second single ``Hanggang Ngayon'' (English translation: ``Until Now''). 
Question : What is Kyla's spouse's name?
Example Output: spouse

Example Input: Context : The BMP-3 is designed and produced by the Kurganmashzavod (``Kurgan Machine Building Plant'') some variants however are built by the Rubtsovsk Machine Building Plant (RMZ), for example the BRM-3K. 
Question : What year was BMP-3 introduced?
Example Output: service entry

Example Input: Context : The T-35 was developed by the OKMO design bureau of the Bolshevik Factory, which began work on a heavy tank in 1930. 
Question : What year was T-35 introduced?
Example Output:
service entry