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: blue, wave, current, timely, drink
Example Output: timely

Example Input: blackjack, gin, poker, wine, slapjack
Example Output: wine

Example Input: forward, backward, down, emotionalities, sliding
Example Output:
emotionalities