Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
--------
Question: Who succeeded Jon Pertwee as Doctor Who?

Answer: doctor who


Question: Responsible for such films as 'Saving Private Ryan' and 'Gladiator', which film Production Company was founded by Steven Spielberg, Jeffrey Katzenberg and David Geffen in 1994?

Answer: saving private ryan


Question: In which country is the Angostura bridge?

Answer:
angostura bridge