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: nutritional value 
Words: heavy, fat, protein, obese, carbs

SOLUTION: obese

PROBLEM: Category: type of sandwich 
Words: submarine, group, club, roll, grilled cheese

SOLUTION: group

PROBLEM: Category: mode of transportation 
Words: fly, train, car, bike, jump

SOLUTION:
jump