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:
admiral, general, cadet, sergeant, ordinary

Ex Output:
ordinary


Ex Input:
file, errands, type, folder, order office supplies

Ex Output:
folder


Ex Input:
fine, decent, flyaway, comfortable, well

Ex Output:

flyaway