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.

Input: Consider Input: Category: boats 
Words: bridge, deck, stern, dock, suits

Output: suits


Input: Consider Input: Category: weather 
Words: brisk, ghostly, windy, fair, deal

Output: ghostly


Input: Consider Input: Category: physical property 
Words: brittleness, fat, big, angular momentum, ugly


Output: big