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:
drink, detestings, whirlpool, main, current

Ex Output:
detestings


Ex Input:
club, hoagie, grilled cheese, place, burger

Ex Output:

place