instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What was the title of Britney Spears' second album (and the single that was released from it)?
answer:
britney spears


question:
Forty hours before he committed suicide in 1945 Adolf Hitler married whom?
answer:
adolf hitler


question:
Which stage musical features 'Audrey II', the man-eating plant?
answer:

audrey ii