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: pounce, fly, swim, walk, walk

SOLUTION: walk

PROBLEM: Category: alcoholic drinks 
Words: wine, rum, bridge, tonic, gin

SOLUTION: bridge

PROBLEM: Category: aesthetic characteristic 
Words: classy, arrest, there, beautiful, fine

SOLUTION:
arrest