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, even, unjust, impartial, fair
Example Output: even

Example Input: pale, deal, tangle, fair, 70
Example Output:
pale