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:
fair, endure, mild, color, tangle

Ex Output:
color


Ex Input:
impartial, pale, fair, dishonest, well

Ex Output:
pale


Ex Input:
fork, glass, frame, acrylic, lead

Ex Output:

fork