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: AMERICANISMS 
Clue: Around 1900 Monroe Rosenfeld remarked that the music heard along NYC's 28th Street sounded like this
[EX A]: tin pans

[EX Q]: Category: AUTHORS 
Clue: In January 1999 this author issued a public statement reminding the world the third millennium really begins Jan. 1, 2001
[EX A]: arthur c. clarke

[EX Q]: Category: NOTABLE GROUPS 
Clue: Harpo Marx was among this group when it met in NYC's Rose Room for its final time, in 1943, & found there was nothing left to say
[EX A]:
the algonquin round table