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: hot, optimist, cool, calm, relaxed

SOLUTION: hot

PROBLEM: trustworthy, decent, fair, tone, ok

SOLUTION: tone

PROBLEM: fold, chips, apron, pack, deck

SOLUTION:
apron