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: dull, fine, handsome, detailed, jail time
Example Output: jail time

Example Input: fine, detached, decent, well, beautiful
Example Output: beautiful

Example Input: amp, fret, board, truss rod, concerned
Example Output:
concerned