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: hotel, level, flat, even, lined
Example Output: lined

Example Input: probation, ticket, exquisite, suspension, fine
Example Output: exquisite

Example Input: ashamed, remorseful, loveful, down, ground
Example Output:
ground