instruction:
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.
question:
Context : The 7.92×57mm Mauser cartridge was adopted by the German Empire in 1905, and was the German service cartridge in both World Wars. 
Question : What year was 7.92×57mm Mauser made?
answer:
service entry


question:
Context : Sonia Gil (born 24 September 1981) is an entrepreneur and travel vlogger. 
Question : What is the university where Sonia Gil went?
answer:
educated at


question:
Context : Grey's Anatomy is an American medical drama television series that premiered on American Broadcasting Company (ABC) as a mid-season replacement on March 27, 2005, and is currently in its 12th season. 
Question : Which production company is involved with Grey's Anatomy?
answer:

production company