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: PRESIDENTIAL FIRSTS 
Clue: The first president to cross the Atlantic Ocean while in office, he did so to meet with other world leaders

SOLUTION: wilson

PROBLEM: Category: MUSICAL INSTRUMENTS 
Clue: Newly discovered, perhaps the oldest playable instrument is one of these, made from a crane's bone

SOLUTION: flute

PROBLEM: Category: AMERICAN AUTHORS 
Clue: In 1900 the Atlantic Monthly published his story "An Odyssey of the North", his literary breakthrough

SOLUTION:
jack london