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: police punishment 
Words: probation, suspension, jail, fine, attractive

SOLUTION: attractive

PROBLEM: Category: elements 
Words: ice, air, fire, hire, combustion

SOLUTION: hire

PROBLEM: Category: consumer product 
Words: content, fearful, merchandise, substance, item

SOLUTION:
fearful