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: pie, fried, misuse, fritter, cake
Example Output: misuse

Example Input: decent, well, flaxen, fair, unjust
Example Output: flaxen

Example Input: duck, dog, horse, elephant, get down
Example Output:
get down