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:
cool, fair, light, fine, level

Ex Output:
fine


Ex Input:
hoist, neck, concrete pourer, hummingbird, crane

Ex Output:
concrete pourer


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

Ex Output:

glide