user: Question: Which entrant used the chassis De Tomaso 505?
Columns: ['Year', 'Entrant', 'Chassis', 'Engine', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1970.0, 'Frank Williams Racing Cars', 'De Tomaso 505', 'Cosworth V8', 0.0]
SQL:

assistant: SELECT "Entrant" FROM "Table" WHERE "Chassis" = 'De Tomaso 505';