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.
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Question: Context : The French police continued to use the MAS-38 after World War II until it was replaced in the 1950s by the MAT-49 submachine gun. 
Question : Which was the official year for the approval of MAS-38?

Answer: service entry


Question: Context : Theta Circini (t Cir), is a star located in the constellation Circinus. 
Question : The star Theta Circini is part of the constellation known as what?

Answer: constellation


Question: Context : Henry J. Muller, Jr. (born 1917) is a retired American soldier who served during World War II in the United States Army with the 11th Airborne Division between 1944 and 1945. 
Question : What war or battle involved Henry J. Muller?

Answer:
conflict