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: fret, notes, emotional state, bored, emotional upsets
Example Output: notes

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

Example Input: dumpling, whittle, dunker, blueberry, fritter
Example Output:
whittle