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:
| Round | Circuit | Date | Pole Position | Fastest Lap | Winning Driver | Winning Team |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | Hockenheimring | 1 May | Bruno Spengler | Bruno Spengler | Bruno Spengler | HWA Team |
| 2 | Circuit Park Zandvoort | 15 May | Bruno Spengler | Mike Rockenfeller | Mike Rockenfeller | Abt Sportsline |
| 3 | Red Bull Ring , Spielberg | 5 June | Martin Tomczyk | Bruno Spengler | Martin Tomczyk | Team Phoenix |
| 4 | EuroSpeedway Lausitz | 19 June | Bruno Spengler | Timo Scheider | Martin Tomczyk | Team Phoenix |
| 5 | Norisring , Nuremberg | 3 July | Bruno Spengler | Jamie Green | Bruno Spengler | HWA Team |
| NC | Showevent Olympiastadion München | 16 July | Inter-marque races | Inter-marque races | Edoardo Mortara | Team Rosberg |
| NC | Showevent Olympiastadion München | 17 July | Knockout races | Knockout races | Bruno Spengler | HWA Team |
| 6 | Nürburgring | 7 August | Mattias Ekström | David Coulthard | Mattias Ekström | Abt Sportsline |
| 7 | Brands Hatch , Kent | 4 September | Mike Rockenfeller | Martin Tomczyk | Martin Tomczyk | Team Phoenix |
| 8 | Motorsport Arena Oschersleben | 18 September | Miguel Molina | Mattias Ekström | Mattias Ekström | Abt Sportsline |
| 9 | Circuit Ricardo Tormo , Valencia | 2 October | Mattias Ekström | Timo Scheider | Mattias Ekström | Abt Sportsline |
Question:
In the circuit Showevent Olympiastadion München, where the winning driver is Bruno Spengler, what is the pole position?
Answer:
Knockout races