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: dock, canvas, deck, blocking, caution

Output: dock


Input: Consider Input: heat, hire, burn, air, fire

Output: hire


Input: Consider Input: pig, stoop, push, duck, get down


Output: pig