user: Question: Which Chassis has an Entrant of Cooper Car Company, and a Year of 1963?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1961.0, 'Louise Bryden-Brown', 'Lotus 18', 'Climax Straight-4', 0.0]
SQL:

assistant: SELECT "Chassis" FROM "Table" WHERE "Entrant" = 'Cooper Car Company' AND "Year" = 1963.0;