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

Example Input: Mar Chiquita (Cordoba) is the largest natural salt lake in which South American country?
Example Output: mar chiquita lake

Example Input: What nationality was Che Guevara?
Example Output: che guevara

Example Input: In which English city are the Museum of the Jewellery Quarter and Cadbury World?
Example Output:
cadbury world