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: current, history, wave, jetstream, whirlpool

Output: history


Input: Consider Input: fine, classy, mad, happy, relaxed

Output: classy


Input: Consider Input: squat, dodge, duck, sprint, goose


Output: goose