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: vodka, spider, gin, blackjack, go fish
Example Output: vodka

Example Input: general, boring, soldier, ubiquitous, average
Example Output: soldier

Example Input: pie, skin, doughnut, fritter, lollygag
Example Output:
lollygag