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 : 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?

Answer: parent company


Question: Context : Halmir was the son of Haldan and had four children: sons Haldir and Hundar, and daughters Hareth and Hiril. 
Question : What city is Halmir associated with?

Answer: residence


Question: Context : The Gewehr 98 replaced the earlier Gewehr 1888 rifle as the German service rifle, first saw combat in the Boxer Rebellion, and was the main German infantry rifle of World War I. The Gewehr 98 saw further military use by the Ottoman Empire and Francoist Spain. 
Question : What year was the service entry date for Gewehr 98?

Answer:
service entry