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 |
| --- | --- | --- | --- | --- |
| Nigel Mansell | Williams - Honda | 69.0 | 1:42:26.415 | 1.0 |
| Alain Prost | McLaren - TAG | 69.0 | + 20.659 | 4.0 |
| Nelson Piquet | Williams - Honda | 69.0 | + 36.262 | 3.0 |
| Keke Rosberg | McLaren - TAG | 69.0 | + 1:35.673 | 6.0 |
| Ayrton Senna | Lotus - Renault | 68.0 | + 1 Lap | 2.0 |
| René Arnoux | Ligier - Renault | 68.0 | + 1 Lap | 5.0 |
| Jacques Laffite | Ligier - Renault | 68.0 | + 1 Lap | 8.0 |
| Michele Alboreto | Ferrari | 68.0 | + 1 Lap | 11.0 |
| Martin Brundle | Tyrrell - Renault | 67.0 | + 2 Laps | 19.0 |
| Alan Jones | Lola - Ford | 66.0 | + 3 Laps | 13.0 |
| Philippe Streiff | Tyrrell - Renault | 65.0 | + 4 Laps | 17.0 |
| Huub Rothengatter | Zakspeed | 63.0 | + 6 Laps | 24.0 |
| Riccardo Patrese | Brabham - BMW | 44.0 | Turbo | 9.0 |
| Piercarlo Ghinzani | Osella - Alfa Romeo | 43.0 | Gearbox | 23.0 |
| Andrea de Cesaris | Minardi - Motori Moderni | 40.0 | Gearbox | 21.0 |
| Thierry Boutsen | Arrows - BMW | 38.0 | Electrical | 12.0 |
| Gerhard Berger | Benetton - BMW | 34.0 | Turbo | 7.0 |
| Stefan Johansson | Ferrari | 29.0 | Accident | 18.0 |
| Johnny Dumfries | Lotus - Renault | 28.0 | Accident | 16.0 |
| Jonathan Palmer | Zakspeed | 24.0 | Engine | 22.0 |
| Derek Warwick | Brabham - BMW | 20.0 | Engine | 10.0 |
| Alessandro Nannini | Minardi - Motori Moderni | 17.0 | Turbo | 20.0 |
| Teo Fabi | Benetton - BMW | 13.0 | Battery | 15.0 |
| Christian Danner | Osella - Alfa Romeo | 6.0 | Turbo | 25.0 |
| Patrick Tambay | Lola - Ford | 0.0 | Accident in morning warmup | 14.0 |
Question:
What is the average laps for a grid larger than 2, for a ferrari that got in an accident?
Answer:
29.0