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: level, corner, chips, deck, caution
Example Output: chips

Example Input: promote, empower, fire, ice, ban
Example Output: ice

Example Input: dolphin, canoe, fish, raft, hiking
Example Output:
dolphin