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: wine, rum, bridge, tonic, gin

Output: bridge


Input: Consider Input: colonel, ordinary, standard, ubiquitous, general

Output: colonel


Input: Consider Input: file, keys, organize, errands, correspondence


Output: keys