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: flat, level, mansion, smooshed, elevation

Output: mansion


Input: Consider Input: fly, grasshopper, walk, waggle, train

Output: train


Input: Consider Input: dull, attractive, exquisite, fine, flyaway


Output: flyaway