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 consistency, answers should be in all lower cased letters.

Category: BRAZIL 
Clue: It got its name after a Spanish explorer reported being attacked by female warriors there
amazon river

Category: GULF 
Clue: The Chiriqui, Mosquito & San Blas Gulfs engulf this country that's bisected by a canal
panama

Category: EASY 
Clue: In 1965 Hal Fryar played Ringo in "The Outlaws Is Coming" & this man played Ringo in "Help!"

ringo starr