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

SOLUTION: flute

PROBLEM: Category: THE ARMED SERVICES
Clue: In September 1997 this branch of the U.S. Armed Services celebrated its 50th anniversary

SOLUTION: u.s. air force

PROBLEM: Category: STORY INSPIRATIONS
Clue: The 1949 shooting of Philly 1B Eddie Waitkus by Ruth Steinhagen inspired this novel, later a 1984 film

SOLUTION:
the natural