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: fudge, banned, brownie, unwarranted, fib
Example Output: brownie

Example Input: angular momentum, fat, calcium, brittleness, ugly
Example Output: calcium

Example Input: size, alright, even, variety, fair
Example Output:
alright