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

Example Input: Who released the albums Sentimental Journey, Goodnight Vienna, Bad Boy, Old Wave and Vertical Man between 1970 and 1999?
Example Output: vertical man

Example Input: Richard Addinsell's most famous piece of music was used in the 1941 film 'Dangerous Moonlight', what is its title?
Example Output: dangerous moonlight

Example Input: Which playwright wrote the plays Heartbreak House, The Devil's Disciple and Back to Methusaleh?
Example Output:
the devil's disciple