instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What horse won the 2009 Grand National?
answer:
2009 grand national


question:
Which Noble prize-winning novelist is best known for 'And Quiet Flows the Don?
answer:
and quiet flows the don


question:
In which country is the deepwater port of Belem?
answer:

belem