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: egret, mallet, tackle, davit, crane
Example Output: tackle

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

Example Input: meter, ounce, mile, foot, eye
Example Output:
eye