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.

[EX 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
[EX A]: berlin

[EX Q]: Category: AMERICAN POETRY 
Clue: In "Stopping by Woods on a Snowy Evening", he wrote that he had "promises to keep, and miles to go before I sleep"
[EX A]: frost

[EX Q]: Category: THE ANCIENTS SPEAK 
Clue: Hippocrates called this "the most distinguished of all the arts" but "by far the least esteemed"
[EX A]:
medicine