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:
| Rider | Manufacturer | Laps | Time/Retired | Grid |
| --- | --- | --- | --- | --- |
| Tohru Ukawa | Honda | 28.0 | 44:39.467 | 3.0 |
| Valentino Rossi | Honda | 28.0 | +0.932 | 1.0 |
| Loris Capirossi | Honda | 28.0 | +8.259 | 2.0 |
| Daijiro Kato | Honda | 28.0 | +26.962 | 14.0 |
| Carlos Checa | Yamaha | 28.0 | +27.227 | 7.0 |
| Olivier Jacque | Yamaha | 28.0 | +27.889 | 9.0 |
| Norifumi Abe | Yamaha | 28.0 | +30.215 | 15.0 |
| Shinya Nakano | Yamaha | 28.0 | +30.781 | 8.0 |
| Max Biaggi | Yamaha | 28.0 | +43.796 | 4.0 |
| Garry McCoy | Yamaha | 28.0 | +45.501 | 5.0 |
| Jurgen vd Goorbergh | Honda | 28.0 | +1:06.938 | 12.0 |
| Tetsuya Harada | Honda | 28.0 | +1:19.560 | 19.0 |
| Pere Riba | Yamaha | 28.0 | +1:19.857 | 20.0 |
| John Hopkins | Yamaha | 28.0 | +1:31.519 | 17.0 |
| Régis Laconi | Aprilia | 28.0 | +1:32.725 | 18.0 |
| Sete Gibernau | Suzuki | 27.0 | +1 lap | 10.0 |
| Alex Barros | Honda | 26.0 | Accident | 13.0 |
| Kenny Roberts, Jr. | Suzuki | 9.0 | Retirement | 6.0 |
| Nobuatsu Aoki | Proton KR | 7.0 | Accident | 11.0 |
| Jeremy McWilliams | Proton KR | 5.0 | Retirement | 16.0 |
Question:
How many laps were in grid 4?
Answer:
28.0