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: employment activity 
Words: pay, instruct, heat, fire, scold

SOLUTION: heat

PROBLEM: Category: elements 
Words: fire, earth, water, blaze, recruit

SOLUTION: recruit

PROBLEM: Category: police punishment 
Words: content, penalty, money, suspension, fine

SOLUTION:
content