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:
run, exercise, fall, drop, leaves

Ex Output:
leaves


Ex Input:
sugar, angular momentum, large, area, fat

Ex Output:
sugar


Ex Input:
beside, close, neighboring, finished for the day, adjacent

Ex Output:

finished for the day