Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
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Question: windlass, excavator, crane, hummingbird, steam roller

Answer: hummingbird

Question: windlass, hummingbird, neck, crane, duck

Answer: windlass

Question: excited, angry, content, happy, specialty

Answer:
specialty