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: 20TH CENTURY AMERICA 
Clue: On April 6, 1917 America entered World War I & this composer wrote "Over There"
[A]: george m. cohan


[Q]: Category: ARCHITECTURE 
Clue: This architecturally controversial Paris complex opened in 1977
[A]: pompidou centre/beaubourg


[Q]: Category: NOVELS 
Clue: Turgenev novel that dealt with confrontation between 2 generations & popularized the word "nihilist"
[A]:
fathers and sons