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: early, water, delayed, history, current
Example Output: water

Example Input: fudge, brownie, unlicensed, cake, pudding
Example Output: unlicensed

Example Input: calm, fine, well, detached, exquisite
Example Output:
exquisite