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: summer, roll, plummet, fall, exercise

Output: summer


Input: Consider Input: deck, corner, draw, tko, glove

Output: draw


Input: Consider Input: downward, descending, lower, ashamed, down


Output: ashamed