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: fair, raining, trustworthy, endure, 70
Example Output: trustworthy

Example Input: ok, wispy, jail, prime, fine
Example Output: ok

Example Input: adjacent, nearer, not open, on top of, close
Example Output:
not open