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 : Domitia Longina (c. AD 53-55--c. AD 126-130) was an Empress of Rome and wife to the Roman Emperor Domitian. 
Question : What is Domitia Longina's spouse's name?
Example Output: spouse

Example Input: Context : Li Cunxu was born in 885, at Jinyang (i.e., Taiyuan), during the reign of Emperor Zhaozong of Tang. 
Question : What is Li Cunxu's spouse's name?
Example Output: spouse

Example Input: Context : ISO 3166-2 is part of the ISO 3166 standard published by the International Organization for Standardization (ISO), and defines codes for identifying the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Question : Who set the standards for ISO 3166-2?
Example Output:
standards body