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: outdoor sport activity 
Words: kayak, raft, fish, canyoning, dolphin

Output: dolphin


Input: Consider Input: Category: police punishment 
Words: suspension, fine, jail time, calm, arrest


Output: calm