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.

Example Input: Category: shady activities 
Words: falsification, fib, invent, fudge, cupcake
Example Output: cupcake

Example Input: Category: food 
Words: meat, weenie, loyalty, frank, vittles
Example Output: loyalty

Example Input: Category: aesthetic characteristic 
Words: detailed, neat, bright, jail, fine
Example Output:
jail