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: chocolate food 
Words: fudge, chocolate cake, pudding, unwarranted, heavy

SOLUTION: unwarranted

PROBLEM: Category: physical activity 
Words: run, jump, autumn, fall, swim

SOLUTION: autumn

PROBLEM: Category: emotional status 
Words: alert, mad, fine, comfortable, penalty

SOLUTION:
penalty