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: suppressed, fawn, follow, cajole, kitten
Example Output: kitten

Example Input: current, flow, history, signal, jetstream
Example Output: history

Example Input: cup, glass, translucent fabric, woodwork, lead
Example Output:
cup