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.

Input: Consider Input: hull, galley, deck, lifeline, tko

Output: tko


Input: Consider Input: concise, vittles, wiener, provision, frank

Output: concise


Input: Consider Input: early, prompt, flow, current, belated


Output: flow