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: pretty, probation, neat, fine, level

SOLUTION: probation

PROBLEM: Category: guitar part 
Words: neck, fret, jack, pick, angry

SOLUTION: angry

PROBLEM: Category: chocolate food 
Words: brownies, fudge, brownie, cookies, falsehood

SOLUTION:
falsehood