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: type of sandwich 
Words: hoagie, burger, hamburger, club, discothek

SOLUTION: discothek

PROBLEM: Category: emotional status 
Words: merchandise, angry, ecstatic, content, joyful

SOLUTION: merchandise

PROBLEM: Category: direction 
Words: down, ground, forward, emotional state, left

SOLUTION:
emotional state