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: U.S. CITIES 
Clue: Founded in 1758, it's named for a British prime minister who was a noted defender of the American Colonists

SOLUTION: pittsburgh

PROBLEM: Category: PEOPLE IN HISTORY 
Clue: The spear that killed him in 1779 sold at auction in 2003 for over $400,000

SOLUTION: captain james cook

PROBLEM: Category: BIG BOOKS 
Clue: When they began in 1879, the creators of this thought they'd finish in 10 years; 5 years later, they reached "ant"

SOLUTION:
the oxford english dictionary