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:
blow, waste away, fritter, dally, croquet

Ex Output:
croquet


Ex Input:
weenie, provision, frank, cheese, precise

Ex Output:
precise


Ex Input:
crouch, get down, fall, dog, duck

Ex Output:

dog