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.

Category: TRANSPORTATION 
Clue: An aircraft that can take off & touch down on water or land is called this, like a class of animals
amphibious

Category: SHAKESPEARE 
Clue: "As You Like It" is partially set in the forest of this
arden

Category: RICH FELLAS 
Clue: The 2 millionaires Jacqueline Bouvier married

john f. kennedy & aristotle onassis