instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which hero of science fiction was created by Alex Raymond?
answer:
alex raymond


question:
Cinder Cone, composite, and shield are all types of what?
answer:
cinder cone


question:
What country, after having governed it for 155 years, transferred its sovereignty of Hong Kong to China in 1997?
answer:

china