instruction:
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.
question:
Category: 17th CENTURY BRITISH HISTORY 
Clue: The lantern with which he planned to initiate his most famous act is in the possession of England's Ashmolean Museum
answer:
guy fawkes


question:
Category: THE ARMED SERVICES 
Clue: In September 1997 this branch of the U.S. Armed Services celebrated its 50th anniversary
answer:
u.s. air force


question:
Category: AFRICAN MYTHOLOGY 
Clue: The great creator said these animals couldn't eat the fish of the river, so they fed on the land at night
answer:

hippos