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: BIRDS 
Clue: The willow ptarmigan, which makes its home in Arctic areas, is this state's official bird

SOLUTION: alaska

PROBLEM: Category: IN THE TEENS 
Clue: One of these "wheelers" is a large tractor-trailer truck rig

SOLUTION: 18-wheeler

PROBLEM: Category: SPORTS SHIFTS 
Clue: In 1963 the NBA's Syracuse Nationals moved to Philadelphia & changed their name to this

SOLUTION:
philadelphia 76\'ers