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, squander, apple, fritter, divide

Ex Output:
apple


Ex Input:
ice, let go, fire, sack, replace

Ex Output:
ice


Ex Input:
dastards, detests, current, delayed, water

Ex Output:

water