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:
condominium, smooshed, lined, smooth, flat

Ex Output:
condominium


Ex Input:
prime, penalty, fine, mad, arrest

Ex Output:
mad


Ex Input:
alright, beautiful, happy, fine, relaxed

Ex Output:

beautiful