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

Example Input: Can you name the final movie directed by Alfred Hitchcock?
Example Output: alfred hitchcock

Example Input: 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?
Example Output: byzantine empire

Example Input: LeBron James, Chris Bosh and Dwyane Wade play what sport professionally for the Miami Heat?
Example Output:
chris bosh