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: flamingo, crane, davit, pelican, derrick
Example Output: davit

Example Input: color, variety, well, fair, decent
Example Output: decent

Example Input: wave, jog, fly, ant, walk
Example Output:
ant