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:
concerned, fret, notes, frustrated, worried

Ex Output:
notes


Ex Input:
penalty, handsome, suspension, hearing, fine

Ex Output:
handsome


Ex Input:
dive, fly, soar, jog, wave

Ex Output:

dive