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: fine, classy, mad, happy, relaxed

Output: classy


Input: Consider Input: club, open-faced, bacon, french toast, dance hall

Output: dance hall


Input: Consider Input: derrick, crane, heron, hummingbird, excavator


Output: excavator