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: neck, swift, egret, tackle, crane

Output: tackle


Input: Consider Input: firm, shareholders, common, alignment, taut

Output: taut


Input: Consider Input: blocking, fold, deck, check, board


Output: blocking