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: accomodation 
Words: mansion, mountain, flat, house, duplex

SOLUTION: mountain

PROBLEM: Category: geographical property 
Words: paved, even, hill, level, flat

SOLUTION: even

PROBLEM: Category: chocolate food 
Words: rich, molasses, fudge, brownies, wrongful

SOLUTION:
wrongful