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: danish, fried, lollygag, pastry, fritter
Example Output: lollygag

Example Input: unyielding, concerted, firm, combined, united
Example Output: unyielding

Example Input: social, swoon, love, fawn, deer
Example Output:
deer