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.

Example Input: Context : ``Cha-Ka'' is the first episode of the first season of the 1974 American television series Land of the Lost. 
Question : What is the series that Cha-Ka is a part of?
Example Output: series

Example Input: Context : Wolf-Dietrich Wilcke (11 March 1913 -- 23 March 1944) was a German Luftwaffe pilot during World War II, a fighter ace credited with 162 enemy aircraft shot down in 732 combat missions. 
Question : Which war did Wolf-Dietrich Wilcke serve in?
Example Output: conflict

Example Input: Context : Intars Busulis (born 2 May 1978 in Talsi, Latvia) is a Latvian singer who represented Latvia at the Eurovision Song Contest 2009 in Moscow, Russia with the song Probka (Russian for ``Traffic jam''). 
Question : What was Intars Busulis's occupation?
Example Output:
occupation