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: emotional status 
Words: kind, down, sad, backward, emotionalities

Answer: backward


Question: Category: weather 
Words: mild, warm, fine, fair, deal

Answer: fine


Question: Category: mode of transportation 
Words: spider, flutter, bike, car, fly

Answer:
spider