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: poker 
Words: call, sail, deck, board, queen

SOLUTION: sail

PROBLEM: Category: physical property 
Words: ugly, protein, large, heavy, fat

SOLUTION: protein

PROBLEM: Category: moral characteristic 
Words: fair, ok, ghostly, decent, equitable

SOLUTION:
ghostly