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 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?
[A]: service entry


[Q]: Context : Born on 26 July 1872, Frederick Walshe was educated at Bedford School and at Royal Military Academy, Woolwich. 
Question : What is the university where Frederick Walshe went?
[A]: educated at


[Q]: Context : Established in 1930 and constructing commercial vehicles, Bedford Vehicles was a leading international truck brand, with substantial export sales of light, medium, and heavy trucks throughout the world. 
Question : What is Bedford Vehicles's parent company?
[A]:
parent company