QUESTION: Generate a question with a factual answer?

ANS: When did Madonna embark on the Rebel Heart Tour?

QUESTION: Generate a question with a factual answer?

ANS: What website gave critical acclaim to New Haven for the city's food?

QUESTION: Generate a question with a factual answer?

ANS: The presence of what is a circadian marker?

QUESTION: Generate a question with a factual answer?

ANS:
How many living East Slavic languages are there?