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: fair, dishonest, make the grade, unjust, well
Example Output: make the grade

Example Input: software, file, answer, folder, keys
Example Output:
answer