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.
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Question: Category: PEN NAMES 
Clue: He came out of "The Jungle" to write juvenile novels as Clarke Fitch

Answer: upton sinclair


Question: Category: TV & MOVIE ACTORS 
Clue: John Mahoney of "Frasier" played one of the guys who sold aluminum siding in this Barry Levinson film

Answer: tin men


Question: Category: STEIN TIME 
Clue: On Jan. 18, 1958 this conductor hosted the first of many "Young People's Concerts" on CBS

Answer:
leonard bernstein