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: hire, flame, pay, fire, ban
Example Output: flame

Example Input: specialty, content, angry, program, activity
Example Output: angry

Example Input: emotionalities, jack, headstock, fret, board
Example Output:
emotionalities