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:
grasshopper, fly, swim, dangle, jog

Ex Output:
jog


Ex Input:
delayed, brine, belated, current, postponed

Ex Output:
brine


Ex Input:
elephant, sprint, mallet, duck, dog

Ex Output:

sprint