Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Q: a commode is a special piece of furniture.

A: commode
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Q: the 1st millennium bc was the last millennium before the common era.

A: 1st millennium bc
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Q: the game boy camera is an accessory for the game boy line of video game consoles.

A:
game boy camera
****