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: animal 
Words: waggle, drive, fly, bee, dive

SOLUTION: drive

PROBLEM: Category: bird 
Words: steam roller, goose, parrot, crane, tackle

SOLUTION:
steam roller