Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Example Input: What city is closest to Copacabana beach?
Example Output: copacabana, rio de janeiro

Example Input: What sport features in the films `He Got Game` (1998), `Flubber` (1997) and `Celtic Pride` (1996)?
Example Output: celtic pride

Example Input: Which national football team is nicknamed 'Bafana Bafana'?
Example Output:
south africa national football team