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, raining, equitable, impartial, unjust

Ex Output:
raining


Ex Input:
glass, acrylic, wood, metal, plate

Ex Output:
plate


Ex Input:
wood, woodwork, colander, acrylic, glass

Ex Output:

colander