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: canvas, deck, corner, apron, queen
Example Output: queen

Example Input: dump truck, tackle, crane, duck, mallet
Example Output: dump truck

Example Input: invent, brownie, fudge, falsification, fix
Example Output:
brownie