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: window material 
Words: metal, handle, dish, glass, vinyl

Output: dish


Input: Consider Input: Category: computers 
Words: download, file, order office supplies, document, motherboard

Output: order office supplies


Input: Consider Input: Category: secretary duty 
Words: fax, prepare, sort mail, software, file


Output: software