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: hunting, fish, kayak, goat, raft
Example Output: goat

Example Input: fat, calories, thin, salt, vitamin c
Example Output: thin

Example Input: unwarranted, fudge, pudding, lie, unlicensed
Example Output:
pudding