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:
goat, iguana, raft, hamster, fish

Ex Output:
raft


Ex Input:
bowl, plastic, glass, panel, lead

Ex Output:
bowl


Ex Input:
smooshed, flat, lined, valley, duplex

Ex Output:

duplex