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: weather 
Words: sunny, loyal, tangle, fair, raining

SOLUTION: loyal

PROBLEM: Category: shady activities 
Words: invent, smuggled, smear, fudge, pie

SOLUTION: pie

PROBLEM: Category: physical activity 
Words: mallet, dodge, duck, squat, stoop

SOLUTION:
mallet