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: cool, trustworthy, milky, fair, well

Output: trustworthy


Input: Consider Input: Category: construction 
Words: excavator, steam roller, concrete pourer, swallow, crane

Output: swallow


Input: Consider Input: Category: aesthetic characteristic 
Words: fair, decent, milky, texture, color


Output: decent