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 : The Ampulomet (Russian: 125-мм ампуломёт образца 1941 года, also rendered Ampulomyot, ampulla mortar, etc., lit. ``ampule/vial thrower'' cf. миномёт) was an expedient anti-tank weapon which launched a 125mm incendiary projectile made of spherical glass. 
Question : What year was Ampulomet made?
[EX A]: service entry

[EX Q]: Context : Ian Boothby is married to Y The Last Man co-creator and artist Pia Guerra. 
Question : What is Ian Boothby's spouse's name?
[EX A]: spouse

[EX Q]: Context : Dan Zerfaß (born 1968) is a German classical organist, the cantor at the Worms Cathedral and academic teacher. 
Question : What kind of  occupation does Dan Zerfaß have?
[EX A]:
occupation