TASK DEFINITION: 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.
PROBLEM: Category: aesthetic characteristic 
Words: size, alright, even, variety, fair

SOLUTION: alright

PROBLEM: Category: direction 
Words: remorseful, south, descending, downward, down

SOLUTION: remorseful

PROBLEM: Category: consumer product 
Words: service, content, shop, file, nervous

SOLUTION:
nervous