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: shady activities 
Words: falsification, fib, invent, fudge, cupcake

SOLUTION: cupcake

PROBLEM: Category: personal characteristic 
Words: cool, calm, warm, persistent, level

SOLUTION: warm

PROBLEM: Category: type of sandwich 
Words: toast, dagwood, lettuce, dance hall, club

SOLUTION:
dance hall