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: regular, general, captain, ubiquitous, popular
Example Output: captain

Example Input: concrete pourer, winch, excavator, hoist, crane
Example Output: hoist

Example Input: bambi, cub, doe, lust, fawn
Example Output:
lust