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:
camp, fish, iguana, hike, kayak

Ex Output:
iguana

Ex Input:
sea turtle, whale, dog, fish, hunting

Ex Output:
hunting

Ex Input:
fair, unprejudiced, impartial, honorable, variety

Ex Output:
variety