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: computers 
Words: download, file, order office supplies, document, motherboard

Answer: order office supplies


Question: Category: animal 
Words: stingray, horse, iguana, wrestle, fish

Answer: wrestle


Question: Category: secretary duty 
Words: folder, file, type, schedule, order office supplies

Answer:
folder