user: ### NOW ANSWER:
Question: What are the points for a chassis of March 811?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Pts.']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1978.0, 'Olympus Cameras / Hesketh Racing', 'Hesketh 308E', 'Ford V8', 1.0]
SQL:

assistant: SELECT SUM("Pts.") FROM "Table" WHERE "Chassis" = 'March 811';