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.

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

Output: berlin

Input: Consider Input: Category: QUESTIONABLE SONGS
Clue: The song that says, "Turn around & you're 2, turn around & you're 4" opens with this question

Output: where are you going?

Input: Consider Input: Category: WRITING IN FICTION
Clue: The Broadway show "Charly" was based on the journals in this Daniel Keyes novel
Output: flowers for algernon