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: moral characteristic 
Words: unprejudiced, unjust, milky, ok, fair

SOLUTION: milky

PROBLEM: Category: guitar part 
Words: fret, notes, emotional upsets, output cord, truss rod

SOLUTION: emotional upsets

PROBLEM: Category: physical activity 
Words: sprint, pig, stoop, duck, crouch

SOLUTION:
pig