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:
late, up to the moment, current, course, belated

Ex Output:
course


Ex Input:
fritter, dunker, patty, waste, danish

Ex Output:
waste


Ex Input:
bold, meat, bun, wiener, frank

Ex Output:

bold