QUESTION: Generate a question with a factual answer?

ANS: When were the Netherlands' colonies annexed by Napoleon?

QUESTION: Generate a question with a factual answer?

ANS: How do hydraulic elevators work in emergencies?

QUESTION: Generate a question with a factual answer?

ANS: What is added to sentences to specify status or tone?

QUESTION: Generate a question with a factual answer?

ANS:
What empire was Guinea-Bissau once part of?