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: sergeant, general, standard, plain, ordinary
Example Output: sergeant

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

Example Input: club, blt, team, community, outing
Example Output:
blt