QUESTION: Generate a question with a factual answer?

ANS: What is another name for an elevator shaft?

QUESTION: Generate a question with a factual answer?

ANS: Ancient civilizations often alloyed metals for what reason?

QUESTION: Generate a question with a factual answer?

ANS: What is the Westminster Retable?

QUESTION: Generate a question with a factual answer?

ANS:
What is Brasilia's proper city population?