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: fat, sugar, ugly, chunky, angular momentum
Example Output: sugar

Example Input: swim, leaves, fall, hiems, spring
Example Output: swim

Example Input: sunny, clime, make the grade, fair, size
Example Output:
size