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: AMERICANA 
Clue: In 1986 this model kit company merged with its main competitor, Monogram
[EX A]: revell

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

[EX Q]: Category: INTERIOR DESIGN 
Clue: In 1991 Charles Hall sued Aqua Queen & other companies for infringing his patent on this furniture item
[EX A]:
the waterbed