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: bike, flap, fly, walk, wave
Example Output: walk

Example Input: group, dance hall, club, outing, dagwood
Example Output: dagwood

Example Input: emotionalities, down, right, miserable, ashamed
Example Output:
right