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:
fair, unprejudiced, impartial, honorable, variety

Ex Output:
variety


Ex Input:
dagwood, club, doorstep, hamburger, community

Ex Output:
community


Ex Input:
walk, beetle, dive, fly, walk

Ex Output:

walk