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:
duplex, studio, flat, paved, squashed

Ex Output:
paved


Ex Input:
format, sort mail, make coffee, order office supplies, file

Ex Output:
format


Ex Input:
fudge, fix, lie, loosen, molasses

Ex Output:

molasses