Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Ex Input:
Category: animal 
Words: goat, cat, fish, hamster, hunting

Ex Output:
hunting


Ex Input:
Category: animal 
Words: soar, cockroach, walk, fly, run

Ex Output:
soar


Ex Input:
Category: moral characteristic 
Words: meat, courage, frank, loyalty, stern

Ex Output:

meat