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: DESIGN
Clue: Derived from scutum, the Latin for "shield", it's a shield bearing a coat of arms, or a metal plate around a keyhole
escutcheon

Category: THE TITLE ESCAPES ME
Clue: 3 chimpanzees travel through time to 20th century Earth in the 1971 sequel "Escape From" this place
the planet of the apes

Category: FIRST & LAST KINGS
Clue: Otto of Bavaria & Constantine II
greece