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: lollygag, cake, misuse, goodbye, fritter
Example Output: cake

Example Input: fearful, content, substance, program, thing
Example Output: fearful

Example Input: format, download, hardware, schedule appointments, file
Example Output:
schedule appointments