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: stern, frank, weenie, harsh, concise
Example Output: weenie

Example Input: war, brandy, bridge, gin, blackjack
Example Output: brandy

Example Input: right, ashamed, opposite of up, down, ground
Example Output:
ashamed