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:
ashamed, disgusted, emotional upsets, right, down

Ex Output:
right


Ex Input:
variety, medium, endure, size, fair

Ex Output:
endure


Ex Input:
pudding, fudge, replace, loosen, falsehood

Ex Output:

pudding