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: tackle, davit, swift, crane, steam roller
Example Output: steam roller

Example Input: chunky, fat, calcium, carbs, iron
Example Output: chunky

Example Input: dishonest, impartial, fine, fair, color
Example Output:
color