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: falsification, fib, invent, fudge, cupcake
Example Output: cupcake

Example Input: fine, content, acceptable, well, handsome
Example Output: handsome

Example Input: fret, neck, anxious, emotional supports, emotionalities
Example Output:
neck