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: physical activity 
Words: bend, jog, get down, duck, pig

SOLUTION: pig

PROBLEM: Category: baby animals 
Words: buck, bambi, lust, fawn, deer

SOLUTION: lust

PROBLEM: Category: weather 
Words: brisk, ghostly, windy, fair, deal

SOLUTION:
ghostly