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: relaxed, warm, assured, level, cool

Output: warm

Input: Consider Input: deck, draw, gunwale, head, rudder
Output: draw