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:
format, file, support, text, download

Ex Output:
support

Ex Input:
dog, push, duck, squat, jog

Ex Output:
dog

Ex Input:
hunting, fish, sea turtle, horse, cat

Ex Output:
hunting