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 : Columbus Nova is an investment company founded in 2000 and centered in New York City. 
Question : Which company is the parent company of Columbus Nova?

A: parent company
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Q: Context : The main product offered by Virgin Media Ireland is cable and MMDS (``wireless cable'') television services, in analogue, and SD and HD digital formats, using DVB-C encrypted using Nagravision. 
Question : What is Virgin Media Ireland's parent company?

A: parent company
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Q: Context : The Finnish Defence Forces were equipped with about 4000 Suomi KP/-31 submachine guns when the Winter War started. 
Question : What year was Suomi KP/-31 made?

A:
service entry
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