instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which band had a hit with the song 'Brown Girl in the Ring'?
answer:
brown girl in the ring


question:
Which film was based on the story The Sentinel by Arthur C Clarke?
answer:
arthur c. clarke


question:
What is the US state capital of West Virginia?
answer:

charleston, west virginia