QUESTION: Generate a question with a factual answer?

ANS: What is the average rainfall of the Sahara?

QUESTION: Generate a question with a factual answer?

ANS: What causes osmotic diarrhea?

QUESTION: Generate a question with a factual answer?

ANS: As of 2000, how many people lived in the Plano Piloto?

QUESTION: Generate a question with a factual answer?

ANS:
What war occurred from 1877 to 1878?