Context: The Schnellweg (en: expressway) system, a number of Bundesstraße roads, forms a structure loosely resembling a large ring road together with A2 and A7. The roads are B 3, B 6 and B 65, called Westschnellweg (B6 on the northern part, B3 on the southern part), Messeschnellweg (B3, becomes A37 near Burgdorf, crosses A2, becomes B3 again, changes to B6 at Seelhorster Kreuz, then passes the Hanover fairground as B6 and becomes A37 again before merging into A7) and Südschnellweg (starts out as B65, becomes B3/B6/B65 upon crossing Westschnellweg, then becomes B65 again at Seelhorster Kreuz).

Question: What is a Schnellweg?
Answer: expressway

Question: What structure does the Schnellweg and a number of roads roughly form?
Answer: a large ring road

Question: When does the Messeschnellweg change to the B6?
Answer: Seelhorster Kreuz

Question: What road does the Messeschnellweg pass the Hanover fairground as?
Answer: B6

Question: What road does the Südschnellweg start out as?
Answer: B65

Question: What road is called the B6 on the southern part?
Answer: Unanswerable

Question: What road becomes B3 near Burgdorf?
Answer: Unanswerable

Question: What fairground does the Messeschnellweg pass?
Answer: Unanswerable

Question: What road does B sixty-five become at Seelhorster Kreuz?
Answer: Unanswerable