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 : Princess Helena of Nassau (German: Prinzessin Helene Wilhelmine Henriette Pauline Marianne von Nassau-Weilburg; 18 August 1831 -- 27 October 1888) was a daughter of William, Duke of Nassau (that is, the German state or region referred to as Nassau), and consort of George Victor, Prince of Waldeck and Pyrmont. 
Question : What is Princess Helena of Nassau's spouse's name?

A: spouse
****
Q: Context : Xavier de Villepin graduated from the renowned French business school HEC Paris in 1949 and later from the Harvard Business School. 
Question : On what date did Xavier de Villepin die?

A: date of death
****
Q: Context : In 1983 Sigmund Widmer initiated a parliamentary motion to establish the Historical Dictionary of Switzerland. 
Question : What armed force did Sigmund Widmer serve in?

A:
military branch
****