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: lifeline, knockout, deck, punch, tko

Output: lifeline


Input: Consider Input: pie, fried, misuse, fritter, cake

Output: misuse


Input: Consider Input: sliding, down, lower, disgusted, flat


Output: disgusted