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

[Q]: In which city could you visit the Anne Frank House?
[A]: anne frank house


[Q]: In which town in California is Disneyland?
[A]: disneyland


[Q]: The Byzantine Empire is the term used since the 19th century to describe the Roman Empire of the Middle Ages, centred on its capital, where?
[A]:
byzantine empire