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: down, kind, ashamed, sliding, unhappy

Output: sliding


Input: Consider Input: promote, empower, fire, ice, ban

Output: ice


Input: Consider Input: walk, fly, fish, glide, bee


Output: glide