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: U.S. TRAVEL AND TOURISM 
Clue: Souvenirs sold at this attraction include 1962 World's Fair glassware & mugs boasting "I made it to the top"
[A]: the space needle


[Q]: Category: ENGLISH 
Clue: Group of 4 letters that sounds different within words for done, exhaustive, hack, idea, branch & coarse
[A]: \"o-u-g-h\"


[Q]: Category: SOVIET HISTORY 
Clue: He died in Moscow September 11, 1971 following nearly 7 years of house arrest
[A]:
nikita khrushchev