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 : The United Defense M42, sometimes known as the Marlin for the manufacturer, was an American submachine gun in World War II. It was produced from 1942 to 1943 by United Defense Supply Corp. (a government-formed company specifically tasked with weapons development) for possible issue as a replacement for the Thompson submachine gun and was used by agents of the Office of Strategic Services (OSS). 
Question : In what year did United Defense M42 enter service?
[A]: service entry


[Q]: Context : Bad Girls Road Trip is an American reality television series which aired on Oxygen from June 12, 2007, to July 24, 2007. 
Question : Where can you find the show Bad Girls Road Trip?
[A]: original network


[Q]: Context : An event for fillies and mares, the race is called the Jenny Wiley Stakes and attracts some of the best female horses in American horse racing. 
Question : What gender is Jenny Wiley of?
[A]:
sex or gender