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: weather 
Words: 70, sunny, equitable, fair, tangle

Answer: equitable


Question: Category: nutritional value 
Words: sugar, calories, iron, fat, area

Answer: area


Question: Category: window material 
Words: spoon, plastic, glass, vinyl, metal

Answer:
spoon