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: window material 
Words: panel, translucent fabric, spatula, metal, glass

Answer: spatula


Question: Category: physical property 
Words: obese, fat, vitamin c, heavy, thin

Answer: vitamin c


Question: Category: moral characteristic 
Words: unprejudiced, fair, dishonest, unjust, deal

Answer:
deal