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: computers 
Words: image, format, reception, file, folder

Answer: reception


Question: Category: boats 
Words: bridge, deck, stern, dock, suits

Answer:
suits