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:
Besides the Caucasus, what mountain range forms the border of Europe and Asia?
answer:
asia

question:
In which Shakespeare play is Antonio importantly good friends with Bassanio?
answer:
antonio