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: swim, leaves, fall, hiems, spring
Example Output: swim

Example Input: deck, tko, rudder, level, corner
Example Output: rudder

Example Input: suspension, fine, calm, alert, relaxed
Example Output:
suspension