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

Example Input: ubiquitous, general, basic, major, popular
Example Output: major

Example Input: fly, drive, beetle, spider, walk
Example Output:
drive