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

[EX Q]: What actress, born in Muscat, Oman, began acting on Australian television on Paradise Beach and Home and Away and is known for her roles in Wedding Crashers (2005), Hot Rod (2007), Definitely, Maybe (2008) and Confessions of a Shopaholic (2009)?
[EX A]: definitely, maybe

[EX Q]: What are Proxima Centauri, Sirius A, Pollux, Arcturus and Betelgeuse?
[EX A]: arcturus

[EX Q]: In which city is the largest football stadium in Germany, home to the 2010-2011 Bundesliga champions?
[EX A]:
bundesliga