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: up to the moment, current, detests, tide, history
Example Output: tide

Example Input: fat, obese, iron, sugar, sugars
Example Output: obese

Example Input: fine, calm, annoyed, ok, suspension
Example Output:
suspension