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 |
| --- | --- | --- | --- | --- |
| Johnny Herbert | Benetton - Renault | 53.0 | 1:18:27.916 | 8.0 |
| Mika Häkkinen | McLaren - Mercedes | 53.0 | +17.779 | 7.0 |
| Heinz-Harald Frentzen | Sauber - Ford | 53.0 | +24.321 | 10.0 |
| Mark Blundell | McLaren - Mercedes | 53.0 | +28.223 | 9.0 |
| Mika Salo | Tyrrell - Yamaha | 52.0 | +1 Lap | 16.0 |
| Jean-Christophe Boullion | Sauber - Ford | 52.0 | +1 Lap | 14.0 |
| Massimiliano Papis | Footwork - Hart | 52.0 | +1 Lap | 15.0 |
| Taki Inoue | Footwork - Hart | 52.0 | +1 Lap | 20.0 |
| Pedro Diniz | Forti - Ford | 50.0 | +3 Laps | 23.0 |
| Ukyo Katayama | Tyrrell - Yamaha | 47.0 | +6 Laps | 17.0 |
| Jean Alesi | Ferrari | 45.0 | Wheel bearing | 5.0 |
| Rubens Barrichello | Jordan - Peugeot | 43.0 | Clutch | 6.0 |
| Eddie Irvine | Jordan - Peugeot | 40.0 | Engine | 12.0 |
| Gerhard Berger | Ferrari | 32.0 | Suspension | 3.0 |
| Luca Badoer | Minardi - Ford | 26.0 | Accident | 18.0 |
| Michael Schumacher | Benetton - Renault | 23.0 | Collision | 2.0 |
| Damon Hill | Williams - Renault | 23.0 | Collision | 4.0 |
| Olivier Panis | Ligier - Mugen-Honda | 20.0 | Spun off | 13.0 |
| David Coulthard | Williams - Renault | 13.0 | Spun off | 1.0 |
| Martin Brundle | Ligier - Mugen-Honda | 10.0 | Puncture | 11.0 |
| Giovanni Lavaggi | Pacific - Ford | 6.0 | Spun off | 24.0 |
| Pedro Lamy | Minardi - Ford | 0.0 | Transmission | 19.0 |
| Andrea Montermini | Pacific - Ford | 0.0 | Collision | 21.0 |
| Roberto Moreno | Forti - Ford | 0.0 | Collision | 22.0 |
Question:
What is the name of the constructor who has more than 50 laps and a grid of 7?
Answer:
McLaren - Mercedes