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: deck, board, cards, knockout, draw
Example Output: knockout

Example Input: level, tone, fair, impartial, milky
Example Output: impartial

Example Input: emotional upsets, fret, amp, fingerpick, string
Example Output:
emotional upsets