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: jog, cow, hike, duck, crouch
Example Output: cow

Example Input: mild, cold, level, stormy, fair
Example Output: level

Example Input: fingerpick, fret, worried, board, inlays
Example Output:
worried