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: iron, heavy, vitamin c, fat, brittleness

SOLUTION: brittleness

PROBLEM: Category: emotional display 
Words: follow, doe, suppressed, culture, fawn

SOLUTION: doe

PROBLEM: Category: emotional status 
Words: down, emotional state, loveful, ashamed, flat

SOLUTION:
flat