QUESTION: Generate a question with a factual answer?

ANS: What makes it difficult for clouds to form?

QUESTION: Generate a question with a factual answer?

ANS: How would a Dutch speaker say "doghouse"?

QUESTION: Generate a question with a factual answer?

ANS: How long did Whitehead and Russell expect to spend creating Principia Mathematica?

QUESTION: Generate a question with a factual answer?

ANS:
In what neighborhood does the Halloween Parade take place?