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.

Example Input: blunt, sausage, hot dog, frank, wienerwurst
Example Output: blunt

Example Input: sergeant, general, standard, plain, ordinary
Example Output: sergeant

Example Input: jail, attractive, wispy, prime, fine
Example Output:
attractive