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: corporate 
Words: solid, sustainability, streamline, firm, private

Output: solid


Input: Consider Input: Category: type of sandwich 
Words: submarine, group, club, roll, grilled cheese

Output: group


Input: Consider Input: Category: computers 
Words: ram, file, motherboard, organize, folder


Output: organize