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: crane, davit, swift, upraise, hoist
Example Output: swift

Example Input: cookies, replace, fudge, banned, lie
Example Output: cookies

Example Input: heat, combustion, flame, fire, hire
Example Output:
hire