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: normal, commander, sargent, private, general
Example Output: normal

Example Input: fly, swim, car, beetle, grasshopper
Example Output: car

Example Input: fawn, love, bambi, expression, identity
Example Output:
bambi