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 | 75.0 | 1:30:38.471 | 2.0 |
| Nelson Piquet | Williams - Honda | 75.0 | + 5.574 | 1.0 |
| Alain Prost | McLaren - TAG | 74.0 | + 1 Lap | 6.0 |
| René Arnoux | Ligier - Renault | 73.0 | + 2 Laps | 8.0 |
| Martin Brundle | Tyrrell - Renault | 72.0 | + 3 Laps | 11.0 |
| Philippe Streiff | Tyrrell - Renault | 72.0 | + 3 Laps | 16.0 |
| Johnny Dumfries | Lotus - Renault | 72.0 | + 3 Laps | 10.0 |
| Derek Warwick | Brabham - BMW | 72.0 | + 3 Laps | 9.0 |
| Jonathan Palmer | Zakspeed | 69.0 | + 6 Laps | 22.0 |
| Thierry Boutsen | Arrows - BMW | 62.0 | Not Classified | 13.0 |
| Patrick Tambay | Lola - Ford | 60.0 | Gearbox | 17.0 |
| Michele Alboreto | Ferrari | 51.0 | Turbo | 12.0 |
| Alessandro Nannini | Minardi - Motori Moderni | 50.0 | Steering | 20.0 |
| Teo Fabi | Benetton - BMW | 45.0 | Fuel system | 7.0 |
| Riccardo Patrese | Brabham - BMW | 39.0 | Engine | 15.0 |
| Ayrton Senna | Lotus - Renault | 27.0 | Gearbox | 3.0 |
| Huub Rothengatter | Zakspeed | 24.0 | Engine | 25.0 |
| Andrea de Cesaris | Minardi - Motori Moderni | 23.0 | Electrical | 21.0 |
| Gerhard Berger | Benetton - BMW | 22.0 | Electrical | 4.0 |
| Alan Jones | Lola - Ford | 22.0 | Throttle | 14.0 |
| Stefan Johansson | Ferrari | 20.0 | Engine | 18.0 |
| Keke Rosberg | McLaren - TAG | 7.0 | Gearbox | 5.0 |
| Jacques Laffite | Ligier - Renault | 0.0 | Collision | 19.0 |
| Christian Danner | Arrows - BMW | 0.0 | Collision | 23.0 |
| Piercarlo Ghinzani | Osella - Alfa Romeo | 0.0 | Collision | 24.0 |
| Allen Berg | Osella - Alfa Romeo | 0.0 | Collision | 26.0 |
Question:
who is the constructor when the grid is more than 23 and the driver is piercarlo ghinzani?
Answer:
Osella - Alfa Romeo