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 : 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?
Example Output: service entry

Example Input: Context : Peder Paulsen Balke was born in Østre Toten in Oppland, Norway. 
Question : What kind of  occupation does Peder Paulsen Balke have?
Example Output: occupation

Example Input: Context : In 1940, Niels Onstad fled to the United States during the Occupation of Norway by Nazi Germany. 
Question : On what date did Niels Onstad die?
Example Output:
date of death