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: jog, cow, hike, duck, crouch
Example Output: cow

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

Example Input: meat, cheese, honesty, hot dog, frank
Example Output:
honesty