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: geographical property 
Words: mountain, flat, hill, mansion, plain

Output: mansion


Input: Consider Input: Category: secretary duty 
Words: file, download, fax, answer calls, schedule


Output: download