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:
glass, wood, coating, knifer, woodwork

Ex Output:
knifer


Ex Input:
merchandise, specialty, tools, content, angry

Ex Output:
angry


Ex Input:
glide, ant, leap, dive, fly

Ex Output:

glide