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, hero, lettuce, bar, toast

Output: bar


Input: Consider Input: fish, kayak, raft, camp, sea turtle


Output: sea turtle