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: doughnut, fritter, fried, pie, seperate
Example Output: seperate

Example Input: goodies, sausage, frank, bold, entree
Example Output: bold

Example Input: shameful, disgusted, sad, down, sliding
Example Output:
sliding