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: mad, beautiful, comfortable, fine, relaxed

Output: beautiful


Input: Consider Input: wine, rum, bridge, tonic, gin

Output: bridge


Input: Consider Input: fire, heat, air, inferno, pay


Output: pay