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: climbing, cow, hiking, fish, wrestle

Output: cow

Input: Consider Input: bored, amp, board, fret, truss rod

Output: bored

Input: Consider Input: grub, frank, wienerwurst, weenie, courage
Output: courage