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

[Q]: Barabas is the central character in what 16th century play?
[A]: barabas

[Q]: What name is given to the Fourth (4th) movement in Beethoven's / Ninth (9th) Symphony?
[A]: ludwig van beethoven

[Q]: Producer Alex Korda engaged Anton Karas to score which entire film, after it had been edited together, using only one instrument?
[A]:
anton karas