QUESTION: Generate a question with a factual answer?

ANS: What substance does fluorescent lamps contain?

QUESTION: Generate a question with a factual answer?

ANS: What does thermal mass reduce the need for?

QUESTION: Generate a question with a factual answer?

ANS: How many people does M'era Luna Festival attract?

QUESTION: Generate a question with a factual answer?

ANS:
When did Bell put in his prior patent?