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.

Example Input: unwarranted, fudge, pudding, lie, unlicensed
Example Output: pudding

Example Input: size, unjust, tone, fair, medium
Example Output: unjust

Example Input: brittleness, obese, sugar, big boned, fat
Example Output:
sugar