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: direction 
Words: south, loveful, down, left, falling

SOLUTION: loveful

PROBLEM: Category: physical property 
Words: thin, brittleness, heavy, angular momentum, fat

SOLUTION: heavy

PROBLEM: Category: ocean 
Words: current, flow, up to the moment, water, course

SOLUTION:
up to the moment