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: moral characteristic 
Words: unprejudiced, warm, fair, ok, balanced

Output: warm


Input: Consider Input: Category: physical activity 
Words: bend, duck, goose, jog, crouch

Output: goose


Input: Consider Input: Category: emotional status 
Words: ashamed, down, emotional upsets, kind, opposite of up


Output: opposite of up