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: aesthetic characteristic 
Words: luke, fair, variety, tone, well

Output: luke


Input: Consider Input: Category: secretary duty 
Words: answer calls, file, correspondence, document, fax

Output: document


Input: Consider Input: Category: type of sandwich 
Words: discothek, lettuce, hamburger, club, toast


Output: discothek