Generate a question with a factual answer.
Generated: During which financial year did the Melbourne rail network record its highest volume of passenger trips?

Generate a question with a factual answer.
Generated: How long did Whitehead and Russell expect to spend creating Principia Mathematica?

Generate a question with a factual answer.
Generated: What had long faded prior to the first European and African arrivals?

Generate a question with a factual answer.
Generated: When did the German reunification take place?