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: personal characteristic 
Words: cold, positive, calm, assured, cool

SOLUTION: cold

PROBLEM: Category: date status 
Words: belated, blue, early, detestings, current

SOLUTION: blue

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

SOLUTION:
convention