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

[Q]: Who plays Dr Evil the nemesis of Austin Powers in the Austin Powers series of films?
[A]: austin powers


[Q]: Devil's Tower National Monument in Wyoming, USA features prominently in which landmark 1977 science fiction film?
[A]: devils tower


[Q]: Which film actress was born in Germany in 1904, went to America after appearing in the film Blue Angel, and became an American citizen in 1937?
[A]:
the blue angel