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 | Date | Event | Circuit | Winning Driver | Winning Team |
| --- | --- | --- | --- | --- | --- |
| 1 | May 12 | Belgian Grand Prix | Circuit Zolder | Elio de Angelis | Squadra Osella Corse |
| 2 | May 26 | Monaco Grand Prix | Circuit de Monaco | Niki Lauda | Project Four |
| – | June 3 | Gunnar Nilsson Trophy | Donington Park | Nelson Piquet | BMW Motorsport |
| 3 | June 30 | French Grand Prix | Dijon-Prenois | Nelson Piquet | BMW Motorsport |
| 4 | July 13 | British Grand Prix | Silverstone Circuit | Niki Lauda | Project Four |
| 5 | July 28 | German Grand Prix | Hockenheimring | Niki Lauda | Project Four |
| 6 | August 11 | Austrian Grand Prix | Österreichring | Jacques Laffite | BMW Motorsport |
| 7 | August 25 | Dutch Grand Prix | Circuit Zandvoort | Hans-Joachim Stuck | Cassani Racing |
| 8 | September 8 | Italian Grand Prix | Autodromo Nazionale Monza | Hans-Joachim Stuck | Cassani Racing |
Question:
Who was the winning team on July 13?
Answer:
Project Four