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: activity 
Words: dally, goodbye, fritter, whittle, dumpling

SOLUTION: dumpling

PROBLEM: Category: social gathering 
Words: grilled cheese, place, club, dance hall, meeting

SOLUTION: grilled cheese

PROBLEM: Category: location (proximity) 
Words: close, nearest, touching, on top of, barred

SOLUTION:
barred