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: swallow, heron, crane, flamingo, tackle

Output: tackle


Input: Consider Input: fair, make the grade, trustworthy, alright, just

Output: make the grade


Input: Consider Input: fritter, croquet, goodbye, pastry, apple


Output: goodbye