The next player must answer the question and give a new question. The original poster verifies the answer, the first correct answer follows with the next question. If it takes longer than 24h to verify the answer or at least two other players verified the answer, it's considered correct even if not, and the game goes on with the question provided there.
For example:
me: Where is the closest train station to Amsterdam Airport?
p1: In Amsterdam. What is the longest track in Brazil?
p2: On the airport itself. How many weeks would you travel on the Trans-Syberian?
me: p2 is correct. The next question is How many weeks would you travel on the Trans-Syberian?
p3: About 2 weeks. How many languages are spoken in the train from Antwerp to Liège at its stop in Hasselt, where the train is split?
p2: p3 is correct. His question is the next one.
etc.
So, the first question is How many languages are spoken in the train from Antwerp to Liège at its stop in Hasselt?
