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: order office supplies, sort mail, file, program, type
Example Output: program

Example Input: flaxen, fair, sunny, cool, pale
Example Output: sunny

Example Input: blunt, sausage, hot dog, frank, wienerwurst
Example Output:
blunt