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: mallet, winch, parrot, winch, crane
Example Output: winch

Example Input: hatchling, fawn, cute, kid, deer
Example Output: cute

Example Input: cajole, love, buck, social, fawn
Example Output:
buck