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:
draw, deck, call, gunwale, blind

Ex Output:
gunwale


Ex Input:
concerned, fret, notes, frustrated, worried

Ex Output:
notes


Ex Input:
calm, icy, chill, freezing, cool

Ex Output:

calm