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

Example Input: canvas, blocking, deck, sail, corner
Example Output: sail

Example Input: south, emotional supports, emotional upsets, sad, down
Example Output:
south