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: prison, mad, arrest, fine, wispy

SOLUTION: mad

PROBLEM: fat, obese, iron, sugar, sugars

SOLUTION: obese

PROBLEM: knockout, fight, call, deck, caution

SOLUTION:
call