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:
| Driver | Constructor | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Lewis Hamilton | McLaren - Mercedes | 56 | 1:31:57.403 | 1 |
| Felipe Massa | Ferrari | 56 | +14.925 | 3 |
| Kimi Räikkönen | Ferrari | 56 | +16.445 | 2 |
| Fernando Alonso | Renault | 56 | +18.370 | 4 |
| Nick Heidfeld | BMW Sauber | 56 | +28.923 | 9 |
| Robert Kubica | BMW Sauber | 56 | +33.219 | 11 |
| Timo Glock | Toyota | 56 | +41.722 | 12 |
| Nelson Piquet Jr. | Renault | 56 | +56.645 | 10 |
| Sebastian Vettel | Toro Rosso - Ferrari | 56 | +1:04.339 | 6 |
| David Coulthard | Red Bull - Renault | 56 | +1:14.842 | 15 |
| Rubens Barrichello | Honda | 56 | +1:25.061 | 13 |
| Kazuki Nakajima | Williams - Toyota | 56 | +1:30.847 | 17 |
| Sébastien Bourdais | Toro Rosso - Ferrari | 56 | +1:31.457 | 8 |
| Mark Webber | Red Bull - Renault | 56 | +1:32.422 | 16 |
| Nico Rosberg | Williams - Toyota | 55 | +1 Lap | 14 |
| Jenson Button | Honda | 55 | +1 Lap | 18 |
| Giancarlo Fisichella | Force India - Ferrari | 55 | +1 Lap | 20 |
| Heikki Kovalainen | McLaren - Mercedes | 49 | Pneumatics | 5 |
| Adrian Sutil | Force India - Ferrari | 13 | Gearbox | 19 |
| Jarno Trulli | Toyota | 2 | Collision damage | 7 |
| Source: | Source: | Source: | Source: | Source: |
Question:
What is the Time/Retired for the BMW Sauber, and Nick Heidfeld?
Answer:
28.923