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.

Ex Input:
balanced, loyal, pale, fair, decent

Ex Output:
pale


Ex Input:
hamburger, club, discothek, lettuce, dagwood

Ex Output:
discothek


Ex Input:
glide, flutter, fly, fish, train

Ex Output:

fish