QUESTION: Generate a question with a factual answer?

ANS: What two formats pioneered the Christmas music tradition in the 1960s?

QUESTION: Generate a question with a factual answer?

ANS: What is speed limit for railways?

QUESTION: Generate a question with a factual answer?

ANS: What is the literal meaning of "healer?"

QUESTION: Generate a question with a factual answer?

ANS:
When did the Yongle Emperor invite Deshin Shekpa to his court?