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: frustrated, amp, string, fret, headstock

SOLUTION: frustrated

PROBLEM: Category: aesthetic characteristic 
Words: comfortable, pretty, there, fine, classy

SOLUTION: comfortable

PROBLEM: Category: secretary duty 
Words: file, correspondence, image, errands, schedule appointments

SOLUTION:
image