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, strap lock, fret, angry, notes

SOLUTION: angry

PROBLEM: Category: weather 
Words: luke, equitable, clime, fair, mild

SOLUTION: equitable

PROBLEM: Category: personal characteristic 
Words: cool, calm, warm, persistent, level

SOLUTION:
warm