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.
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Question: Category: poker 
Words: deck, galley, check, joker, queen

Answer: galley


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

Answer: cupcake


Question: Category: ocean 
Words: course, water, early, brine, current

Answer:
early