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 : Turkish Airlines Flight 1951 (also known as the Poldercrash) was a passenger flight that crashed during landing at the Amsterdam Schiphol Airport, Netherlands, on 25 February 2009, resulting in the death of nine passengers and crew including all three pilots. 
Question : On what date did Turkish Airlines Flight 1951 occur?

Answer: point in time


Question: Context : Nabisco opened corporate offices as the National Biscuit Company in the world's first skyscraper, the Home Insurance Building in the Chicago Loop in 1898. 
Question : What is Nabisco's parent company?

Answer: parent company


Question: Context : Natale sul Nilo (Christmas on the Nile) is a 2002 Italian comedy film directed by Neri Parenti. 
Question : Who had the role of director in Natale sul Nilo?

Answer:
director