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: stingray, row, raft, hunting, fish
Example Output: stingray

Example Input: toast, club, community, grilled cheese, hamburger
Example Output: community

Example Input: fawn, kid, expression, flatter, pester
Example Output:
kid