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 Queen's Own Highlanders (Seaforth and Camerons), officially abbreviated ``QO HLDRS,'' was an infantry regiment of the British Army, part of the Scottish Division. 
Question : What army did Queen's Own Highlanders (Seaforth and Camerons) serve in?

A: military branch
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Q: Context : Narcissus in Chains is the tenth book in the Anita Blake: 
Question : What is the series that Narcissus in Chains is a part of?

A: series
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Q: Context : Her Royal Highness The Princess Victoria Alexandra Alice Mary, Princess Royal and Countess of Harewood, Companion of the Imperial Order of the Crown of India, Dame Grand Cross of the Royal Victorian Order, Dame Grand Cross of the Most Excellent Order of the British Empire, Dame Grand Cross of the Order of St. John of Jerusalem, Member (First Class) of the Royal Red Cross. 
Question : What year did Mary, Princess Royal and Countess of Harewood die?

A:
date of death
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