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: animal 
Words: fly, dangle, bee, jump, flap

SOLUTION: flap

PROBLEM: Category: direction 
Words: remorseful, south, descending, downward, down

SOLUTION: remorseful

PROBLEM: Category: measurement unit 
Words: foot, arm, mile, yard, meter

SOLUTION:
arm