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: climbing, cow, hiking, fish, wrestle

Output: cow


Input: Consider Input: close, nearest, touching, on top of, barred

Output: barred


Input: Consider Input: truss rod, pick, chord, worried, fret


Output: worried