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.

[EX Q]: Context : In 1968 John Cale married fashion designer Betsey Johnson. 
Question : What city is John Cale from?
[EX A]: residence

[EX Q]: Context : Since 1998, GSD&M has been part of the Omnicom Group. 
Question : Which company is the parent company of GSD&M?
[EX A]: parent company

[EX Q]: Context : On June 8, 2010 Ampad was acquired by Esselte. 
Question : What is Ampad's parent company?
[EX A]:
parent company