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: jog, cow, hike, duck, crouch
Example Output: cow

Example Input: mallet, winch, parrot, winch, crane
Example Output: winch

Example Input: fudge, smuggled, cupcake, unwarranted, mangle
Example Output:
cupcake