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:
fat, sugar, ugly, chunky, angular momentum

Ex Output:
sugar


Ex Input:
tangle, fair, impartial, dishonest, balanced

Ex Output:
tangle


Ex Input:
sergeant, general, standard, plain, ordinary

Ex Output:

sergeant