Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

[Q]: Carpo and Elara are moons of which planet?
[A]: elara


[Q]: What are Proxima Centauri, Sirius A, Pollux, Arcturus and Betelgeuse?
[A]: arcturus


[Q]: In which US state is Dodge City, the famous frontier town of the wild west?
[A]:
dodge city, kansas