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: alright, detached, fine, acceptable, bright
Example Output: bright

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

Example Input: unyielding, firm, amalgamated, inflexible, resistant
Example Output:
amalgamated