TASK DEFINITION: Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
PROBLEM: Category: animal 
Words: swim, dive, fly, car, bee

SOLUTION: car

PROBLEM: Category: aesthetic characteristic 
Words: ticket, fine, bright, detailed, exquisite

SOLUTION: ticket

PROBLEM: Category: store status 
Words: not open, running., on top of, close, open

SOLUTION:
on top of