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 : Lida, Princess Victor of Thurn and Taxis (née Lida Eleanor Nicolls), also referred to as Princess Lida of Thurn and Taxis, (1875 -- 6 December 1965) was an American millionairess, socialite, and the wife of Prince Victor of Thurn and Taxis. 
Question : What is Princess Lida of Thurn and Taxis's spouse's name?

A: spouse
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Q: Context : The Brood was filmed in Toronto and Mississauga, Ontario, on a budget of C$1,500,000. 
Question : The film The Brood was directed by who?

A: director
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Q: Context : An order to enter the BTR-60P into Soviet Army service was issued on 13 December 1959. 
Question : What year did BTR-60 come into use?

A:
service entry
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