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: current, water, detests, blue, jetstream
Example Output: detests

Example Input: crew, board, deck, rudder, hull
Example Output: board

Example Input: support, errands, format, file, schedule
Example Output:
format