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:
current, timely, prompt, drink, do tests

Ex Output:
drink


Ex Input:
sugars, fat, protein, skinny, iron

Ex Output:
skinny


Ex Input:
assured, icy, positive, level, cool

Ex Output:

icy