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: alright, size, dishonest, fine, fair
Example Output: size

Example Input: fine, content, acceptable, well, handsome
Example Output: handsome

Example Input: ice, fire, burn, let go, combustion
Example Output:
let go