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: duck, get down, fall, stoop, cow

Output: cow


Input: Consider Input: chunky, fat, calcium, carbs, iron

Output: chunky


Input: Consider Input: emotionalities, pick, emotional state, concerned, fret


Output: pick