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: sugars, obese, big boned, fat, pasty

Output: sugars


Input: Consider Input: run, bats, fly, flutter, spider

Output: flutter


Input: Consider Input: firm, sustainability, corporation, private, tough


Output: tough