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:
toast, club, community, grilled cheese, hamburger

Ex Output:
community


Ex Input:
blue, wave, current, timely, drink

Ex Output:
timely


Ex Input:
digger, heron, crane, mallet, sandpiper

Ex Output:

digger