TASK DEFINITION: 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.
PROBLEM: Category: SINGERS
Clue: This singer played detective Foxxy Cleopatra in the third "Austin Powers" movie

SOLUTION: beyonce knowles

PROBLEM: Category: HISTORIC EUROPEAN LEADERS
Clue: On June 15, 1961 Walter Ulbricht assured journalists that "No one intends to build a wall" dividing this city

SOLUTION: berlin

PROBLEM: Category: BOHEMIAN RHAPSODIES
Clue: In this Smetana opera, Kecal the marriage broker tries to bribe Jenik to give up his true love

SOLUTION:
the bartered bride