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: fine, prime, firstrate, custody, ok

SOLUTION: ok

PROBLEM: cookies, replace, fudge, banned, lie

SOLUTION: cookies

PROBLEM: frank, brash, precise, cheese, harsh

SOLUTION:
cheese