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:
annoyed, detailed, well, fine, content

Ex Output:
detailed


Ex Input:
fret, sad, amp, fingerpick, string

Ex Output:
sad


Ex Input:
milky, ghostly, variety, fair, ok

Ex Output:

ok