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: secretary duty 
Words: answer calls, file, correspondence, document, fax

Output: document


Input: Consider Input: Category: consumer product 
Words: jealous, content, merchandise, jewelry, shop

Output: jealous


Input: Consider Input: Category: fried food 
Words: doughnut, apple, fritter, waste away, dumpling


Output: waste away