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 |
| --- | --- | --- | --- | --- |
| Alain Prost | McLaren - TAG | 60.0 | 1:32:28.408 | 4.0 |
| Nelson Piquet | Williams - Honda | 60.0 | + 7.645 | 2.0 |
| Gerhard Berger | Benetton - BMW | 59.0 | + 1 Lap | 9.0 |
| Stefan Johansson | Ferrari | 59.0 | + 1 Lap | 7.0 |
| Keke Rosberg | McLaren - TAG | 58.0 | Out of Fuel | 6.0 |
| Riccardo Patrese | Brabham - BMW | 58.0 | Out of Fuel | 16.0 |
| Thierry Boutsen | Arrows - BMW | 58.0 | + 2 Laps | 12.0 |
| Martin Brundle | Tyrrell - Renault | 58.0 | + 2 Laps | 13.0 |
| Marc Surer | Arrows - BMW | 57.0 | + 3 Laps | 15.0 |
| Michele Alboreto | Ferrari | 56.0 | Turbo | 5.0 |
| Piercarlo Ghinzani | Osella - Alfa Romeo | 52.0 | Out of Fuel | 26.0 |
| René Arnoux | Ligier - Renault | 46.0 | Wheel | 8.0 |
| Philippe Streiff | Tyrrell - Renault | 41.0 | Transmission | 22.0 |
| Teo Fabi | Benetton - BMW | 39.0 | Engine | 10.0 |
| Jonathan Palmer | Zakspeed | 38.0 | Brakes | 20.0 |
| Christian Danner | Osella - Alfa Romeo | 31.0 | Electrical | 25.0 |
| Alan Jones | Lola - Ford | 28.0 | Overheating | 21.0 |
| Andrea de Cesaris | Minardi - Motori Moderni | 20.0 | Engine | 23.0 |
| Elio de Angelis | Brabham - BMW | 19.0 | Engine | 19.0 |
| Jacques Laffite | Ligier - Renault | 14.0 | Transmission | 14.0 |
| Ayrton Senna | Lotus - Renault | 11.0 | Wheel Bearing | 1.0 |
| Nigel Mansell | Williams - Honda | 8.0 | Engine | 3.0 |
| Johnny Dumfries | Lotus - Renault | 8.0 | Wheel Bearing | 17.0 |
| Huub Rothengatter | Zakspeed | 7.0 | Turbo | 24.0 |
| Patrick Tambay | Lola - Hart | 5.0 | Engine | 11.0 |
| Alessandro Nannini | Minardi - Motori Moderni | 0.0 | Accident | 18.0 |
Question:
What constructor has a 12 grid?
Answer:
Arrows - BMW