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: sausage, matter of fact, frank, vittles, grub
Example Output: matter of fact

Example Input: up to the moment, current, detests, tide, history
Example Output: tide

Example Input: honesty, loyalty, matter of fact, entree, frank
Example Output:
entree