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

SOLUTION: angry

PROBLEM: Category: computers 
Words: errands, file, download, text, folder

SOLUTION: errands

PROBLEM: Category: aesthetic characteristic 
Words: variety, balanced, fair, tone, light

SOLUTION:
balanced