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:
mallet, winch, parrot, winch, crane

Ex Output:
winch


Ex Input:
delayed, brine, belated, current, postponed

Ex Output:
brine


Ex Input:
grub, frank, loyalty, honesty, honest

Ex Output:

grub