QUESTION: Generate a question with a factual answer?

ANS: What did German pilots use to gain knowledge of an airfield?

QUESTION: Generate a question with a factual answer?

ANS: How many square miles of land is Boston?

QUESTION: Generate a question with a factual answer?

ANS: What was the total fertility rate per woman as of 2012?

QUESTION: Generate a question with a factual answer?

ANS:
What is New York City's daily January mean temperature in degrees celsius?