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:
loveful, up, down, remorseful, melancholy

Ex Output:
up


Ex Input:
fair, raining, equitable, impartial, unjust

Ex Output:
raining


Ex Input:
acceptable, comfortable, detailed, mad, fine

Ex Output:

detailed