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: animal 
Words: ant, walk, bike, fly, dangle

Answer: bike


Question: Category: store status 
Words: beside, finished for the day, running., close, gated

Answer: beside


Question: Category: emotional status 
Words: concerned, neck, frustrated, fret, worried

Answer:
neck