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: arrest, fine, ticket, beautiful, custody
Example Output: beautiful

Example Input: fret, notes, emotional state, bored, emotional upsets
Example Output: notes

Example Input: medium, well, color, sunny, fair
Example Output:
sunny