QUESTION: Generate a question with a factual answer?

ANS: In what year did Emperor Wu of Han's reign end?

QUESTION: Generate a question with a factual answer?

ANS: What was the term "mineral" originally meant to describe?

QUESTION: Generate a question with a factual answer?

ANS: The two inventors of the first practical diode were employed by what famous company?

QUESTION: Generate a question with a factual answer?

ANS:
What are the 50 states in the Union known as?