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: AMERICAN LITERATURE 
Clue: Controversial even when serialized in the "National Era", it sold over 300,000 copies in book form in 1852
[A]: uncle tom\'s cabin


[Q]: Category: COLLECTIBLES 
Clue: When he moved into the White House, George W. Bush brought some of his over 150 autographed ones of these
[A]: baseballs


[Q]: Category: TECHNOLOGY 
Clue: After a demonstration of this, the April 8, 1927 New York Times said, "Commercial use in doubt"
[A]:
television