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: inlays, concerned, string, notes, fret
Example Output: concerned

Example Input: brash, frank, bun, hot dog, grub
Example Output: brash

Example Input: file, correspondence, image, errands, schedule appointments
Example Output:
image