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

Eden Park staged some of the 2011 Rugby World Cup matches, in which city can it be found?
eden park

What was the computer's name in 2001: A Space Odyssey?
2001: a space odyssey

In the films Batman Forever (1995) and Batman & Robin (1997) who was Bruce Wayne's ward?

robin