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: unyielding, firm, llc, alignment, private
Example Output: unyielding

Example Input: ghostly, fair, medium, cold, well
Example Output: cold

Example Input: general, soldier, admiral, boring, private
Example Output:
boring