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: mode of transportation 
Words: spider, fly, train, jog, car

Answer: spider


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

Answer: folder


Question: Category: weather 
Words: fair, cool, cold, sunny, luke

Answer:
cool