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: personal characteristic 
Words: cold, positive, calm, assured, cool

Output: cold


Input: Consider Input: Category: boats 
Words: head, hull, knockout, deck, dock

Output: knockout


Input: Consider Input: Category: food 
Words: provision, frank, hot dog, goodies, harsh


Output: harsh