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: direction 
Words: down, backward, up, downward, shameful

SOLUTION: shameful

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

SOLUTION: discothek

PROBLEM: Category: social gathering 
Words: bar, place, roll, clan, club

SOLUTION:
roll