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

Example Input: variety, endure, level, fair, milky
Example Output: endure

Example Input: make the grade, light, cold, fair, tangle
Example Output:
light