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.

Example Input: crying, truss rod, angry, emotional supports, fret
Example Output: truss rod

Example Input: swallow, heron, crane, flamingo, tackle
Example Output: tackle

Example Input: canoe, bat, fish, hunting, camp
Example Output:
bat