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: crew, ring, deck, blocking, punch
Example Output: crew

Example Input: deck, suits, lifeline, draw, fold
Example Output: lifeline

Example Input: unwarranted, tart, fudge, falsification, invent
Example Output:
tart