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: type of sandwich 
Words: picnic, open-faced, club, grilled cheese, lettuce

Output: picnic


Input: Consider Input: Category: emotional status 
Words: merchandise, angry, ecstatic, content, joyful

Output: merchandise


Input: Consider Input: Category: outdoor sport activity 
Words: hunting, swim, camp, fish, bat


Output: bat