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: sugar, calories, iron, fat, area

SOLUTION: area

PROBLEM: Category: type of sandwich 
Words: open-faced, team, roll, doorstep, club

SOLUTION: team

PROBLEM: Category: emotional status 
Words: descending, disgusted, down, miserable, emotional

SOLUTION:
descending