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: vitamin c, salt, fat, big, absorption

SOLUTION: absorption

PROBLEM: deck, crew, fight, knockout, tko

SOLUTION: crew

PROBLEM: refreshing, unruffled, assured, popular, cool

SOLUTION:
refreshing