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: GEOGRAPHIC PHRASES 
Clue: Mythological name sometimes given to Mount Acha & Gibraltar
the pillars of hercules

Category: AFRICA 
Clue: Equatorial Guinea is the only African nation whose offical language is this
spanish

Category: HISTORICAL MOVIES 
Clue: One of the 2 actresses nominated for Oscars for playing the same person in a 1997 blockbuster

kate winslet & gloria stuart