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: unwarranted, fudge, pudding, lie, unlicensed
Example Output: pudding

Example Input: variety, endure, level, fair, milky
Example Output: endure

Example Input: flamingo, dump truck, derrick, duck, crane
Example Output:
dump truck