user: Question: Which Type/code has a Torque@rpm of N·m (lb·ft) @1900–3500? Question 1
Columns: ['Model', 'Years', 'Type/code', 'Power@rpm', 'Torque@rpm']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['SL 350', '2006–2008', 'cubic centimetres (cuin) V6 ( M272 )', 'PS (kW; hp)@6000', 'N·m (lb·ft) @2400–5000']
SQL:

assistant: SELECT "Type/code" FROM "Table" WHERE "Torque@rpm" = 'N·m (lb·ft) @1900–3500';