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: wrongful, fudge, unwarranted, fix, cake

SOLUTION: cake

PROBLEM: Category: employment activity 
Words: promote, ice, retire, ban, fire

SOLUTION: ice

PROBLEM: Category: aesthetic characteristic 
Words: tangle, ghostly, fair, medium, even

SOLUTION:
tangle