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: boxing terminology 
Words: deck, ring, head, knockout, glove

SOLUTION: head

PROBLEM: Category: moral characteristic 
Words: clime, fine, fair, trustworthy, unjust

SOLUTION: clime

PROBLEM: Category: animal 
Words: ant, leap, waggle, bus, fly

SOLUTION:
bus