TASK DEFINITION: Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
PROBLEM: ok, neat, fine, attractive, beautiful

SOLUTION: ok

PROBLEM: replace, fire, retire, air, remove

SOLUTION: air

PROBLEM: fire, earth, pay, replace, scold

SOLUTION:
earth