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: consumer product 
Words: shop, tools, happy, service, content

SOLUTION: happy

PROBLEM: Category: computers 
Words: folder, text, file, ram, prepare

SOLUTION: prepare

PROBLEM: Category: aesthetic characteristic 
Words: mild, fair, cool, size, milky

SOLUTION:
mild