user: Question: with 6 rounds, and a 52 51/52 chassis, who is the driver?
Columns: ['Entrant', 'Constructor', 'Chassis', 'Engine', 'Driver', 'Rounds']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['AFM', 'AFM - Küchen', 'AFM', 'Küchen 2.0 V8', 'Hans Stuck', '1']
SQL:

assistant: SELECT "Driver" FROM "Table" WHERE "Rounds" = '6' AND "Chassis" = '52 51/52';