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: crane, ostrich, davit, dump truck, pelican
Example Output: dump truck

Example Input: penalty, handsome, suspension, hearing, fine
Example Output: handsome

Example Input: call, knockout, deck, check, queen
Example Output:
knockout