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


[Q]: Category: OPERAS BASED ON PLAYS 
Clue: "The Queen of Cornwall", from a play by this author, premiered "Far from the Madding Crowd", in Glastonbury
[A]: thomas hardy


[Q]: Category: LIFE IN THE FAST LANE 
Clue: A fuzzbuster is one of these devices that helps motorists elude cops trying to catch them speeding
[A]:
a radar detector