user: Question: Name the sum of points for chassis of brm p160e and year more than 1974
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1972.0, 'Darnvall Connew', 'Connew PC1', 'Cosworth V8', 0.0]
SQL:

assistant: SELECT SUM("Points") FROM "Table" WHERE "Chassis" = 'brm p160e' AND "Year" > 1974.0;