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: bird 
Words: neck, tackle, derrick, crane, steam roller

Answer: steam roller


Question: Category: emotional status 
Words: down, emotional state, loveful, ashamed, flat

Answer: flat


Question: Category: direction 
Words: forward, below, down, kind, lower

Answer:
kind