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


[Q]: the wii u is a video game console that was released by nintendo on november 18, 2012, and is the successor of the wii.
[A]: wii u


[Q]: water politics are the politics related to whether people have enough fresh drinking water (see water scarcity).
[A]:
water politics