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, lower, emotional upsets, below, falling

SOLUTION: emotional upsets

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

SOLUTION: convention

PROBLEM: Category: aesthetic characteristic 
Words: exquisite, bright, fine, ticket, beautiful

SOLUTION:
ticket