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: output cord, fret, notes, frustrated, chord
Example Output: frustrated

Example Input: bored, amp, board, fret, truss rod
Example Output: bored

Example Input: squander, patty, misuse, spend, fritter
Example Output:
patty