QUESTION: Generate a question with a factual answer?

ANS: When is Brasilia's rainy season?

QUESTION: Generate a question with a factual answer?

ANS: In what year was the British Museum built?

QUESTION: Generate a question with a factual answer?

ANS: What organization stated that the world has this serious problem?

QUESTION: Generate a question with a factual answer?

ANS:
Which two former rivers in Palermo are currently building sites?