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: animals 
Words: duck, jog, cat, pig, mallet

SOLUTION: jog

PROBLEM: Category: physical property 
Words: sugars, fat, thin, large, angular momentum

SOLUTION: sugars

PROBLEM: Category: emotional status 
Words: opposite of up, emotional supports, down, kind, disgusted

SOLUTION:
opposite of up