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: fair, make the grade, trustworthy, alright, just
Example Output: make the grade

Example Input: fine, prime, arrest, hot, jail time
Example Output: hot

Example Input: pie, fib, fudge, unwarranted, invent
Example Output:
pie