You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

[Q]: Category: MIDDLE INITIAL V. 
Clue: This current world leader's middle initial V. stands for Vladimirovich
[A]: vladimir putin


[Q]: Category: DUEL 
Clue: In English-speaking countries, once a duel was accepted, this person chose the weapons to be used
[A]: the person being challenged


[Q]: Category: WORLD FAMOUS 
Clue: Some of this U.S. pop artist's silkscreens are in a museum in Slovakia, near his parents' birthplace
[A]:
andy warhol