Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Model | Years | Type/code | Power@rpm | Torque@rpm |
| --- | --- | --- | --- | --- |
| SL 280 | 2008–2009 | cc (cuin) V6 ( M272 ) | PS (kW; hp)@6000 | N·m (lb·ft) @2500-5000 |
| SL 300 | 2009- | cc (cuin) V6 ( M272 ) | PS (kW; hp)@6000 | N·m (lb·ft) @2500-5000 |
| SL 350 | 2008- | cc (cuin) V6 ( M272 ) | PS (kW; hp)@6500 | N·m (lb·ft) @6500 |
| SL 500, SL 550 | 2006- | cc (cuin) V8 ( M273 ) | PS (kW; hp)@6000 | N·m (lb·ft) @2800-4800 |
| SL 63 AMG | 2008- | cc (cuin) V8 ( M156.984 ) | PS (kW; hp)@6800 | N·m (lb·ft) @5250 |
| SL 600 | 2006-2009 | cc (cuin) V12 BiTurbo ( M275 ) | PS (kW; hp)@5000 | N·m (lb·ft) @1900-3500 |
| SL 65 AMG | 2004- | cc (cuin) V12 BiTurbo ( M275 AMG ) | PS (kW; hp)@4800-5100 | N·m (lb·ft) @2000-4000 |
| SL 65 AMG Black Series | 2008- | cc (cuin) V12 BiTurbo ( M275 AMG ) | PS (kW; hp)@5400 | N·m (lb·ft) @2200-4200 |
Question:
What was the torque@rpm of the sl 65 amg?
Answer:
N·m (lb·ft) @2000-4000