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: bike, beetle, leap, ant, fly

Output: bike


Input: Consider Input: upraise, crane, excavator, digger, hoist

Output: hoist


Input: Consider Input: cat, ostrich, geese, duck, bend


Output: bend