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: fine, firstrate, ticket, money, handsome
Example Output: handsome

Example Input: glass, acrylic, wood, metal, plate
Example Output: plate

Example Input: strap lock, truss rod, fret, output cord, sad
Example Output:
sad