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:
protein, chunky, big boned, fat, capacitance

Ex Output:
protein


Ex Input:
concise, vittles, wiener, provision, frank

Ex Output:
concise


Ex Input:
cool, trustworthy, milky, fair, well

Ex Output:

trustworthy