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: dump truck, tackle, crane, duck, mallet
Example Output: dump truck

Example Input: deal, 70, equitable, fair, raining
Example Output: equitable

Example Input: fold, check, hearts, deck, rudder
Example Output:
rudder