TASK DEFINITION: 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.
PROBLEM: Category: FUNNY HATS 
Clue: The name of this often brimless hat, popular in the 1920s, is French for "bell", after the shape of the hat

SOLUTION: a cloche

PROBLEM: Category: AMERICAN INDIANS 
Clue: When this chief, Pocahontas' father, died in 1618, he was succeeded by his brother Opitchapam

SOLUTION: powhatan

PROBLEM: Category: BALLET & OPERA 
Clue: Warning: If you play the role of Jemmy in the opera "William Tell", you'll get one of these shot off your head

SOLUTION:
an apple