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: HARRISON FORD 
Clue: 1 of the 4 characters Ford has played more than once on film

SOLUTION: han solo, jack ryan, indiana jones or bob

PROBLEM: Category: ANNIVERSARY GIFTS 
Clue: In one form or another you can fork over this metal on the 5th or 25th anniversary

SOLUTION: silver

PROBLEM: Category: 1889 
Clue: He took his "Greatest Show on Earth" to London, where he himself was one of the greatest attractions

SOLUTION:
p.t. barnum