user: Question: Who was the Driver, when the Contsructor was Mercedes-Benz, and when the Chassis was Mercedes-Benz SSK?
Columns: ['Driver', 'Entrant', 'Constructor', 'Chassis', 'Engine']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Ernst-Günther Burggaller', 'German Bugatti Team', 'Bugatti', 'Bugatti T35B', '2.3 L8']
SQL:

assistant: SELECT "Driver" FROM "Table" WHERE "Constructor" = 'Mercedes-Benz' AND "Chassis" = 'Mercedes-Benz SSK';