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.

Input: Consider Input: Context : Udo Cordes (22 July 1921 -- 7 March 2007) was a highly decorated Oberleutnant in the Luftwaffe during World War II, and a recipient of the Knight's Cross of the Iron Cross. 
Question : What award was received by Udo Cordes?

Output: award received


Input: Consider Input: Context : Knights of Xentar is a humorous JRPG eroge (meaning it has erotic content). 
Question : To which series does Knights of Xentar belong?

Output: series


Input: Consider Input: Context : Ortrun Wenkel (born 25 October 1942) is a German operatic contralto. 
Question : What is the sex of Ortrun Wenkel?


Output: sex or gender