QUESTION: Generate a question with a factual answer?

ANS: What is the purpose of adolescence?

QUESTION: Generate a question with a factual answer?

ANS: Beyond petroleum, what is Alaska's largest export?

QUESTION: Generate a question with a factual answer?

ANS: How long is the solar powered plane Solar Impulse able to remain in the air?

QUESTION: Generate a question with a factual answer?

ANS:
What weapon posed a significant threat to US navy ships?