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 : State testing began on 24 November 1974, and the Kh-25 entered production in 1975. 
Question : What year was the service entry date for Kh-25?

Answer: service entry


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 : Just as his career was on an upswing, Earl Hooker died in 1970 at age 41 after a lifelong struggle with tuberculosis. 
Question : What caused Earl Hooker's death?

Answer:
medical condition