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:
| Pos | Rider | Manufacturer | Time/Retired | Points |
| --- | --- | --- | --- | --- |
| 1 | Max Biaggi | Aprilia | 40:36.299 | 25 |
| 2 | Marcellino Lucchi | Aprilia | +6.914 | 20 |
| 3 | Ralf Waldmann | Honda | +18.294 | 16 |
| 4 | Olivier Jacque | Honda | +18.607 | 13 |
| 5 | Jürgen Fuchs | Honda | +31.617 | 11 |
| 6 | Tetsuya Harada | Yamaha | +31.649 | 10 |
| 7 | Jean-Philippe Ruggia | Honda | +31.683 | 9 |
| 8 | Nobuatsu Aoki | Honda | +47.701 | 8 |
| 9 | Luis d'Antin | Honda | +51.186 | 7 |
| 10 | Cristiano Migliorati | Honda | +51.556 | 6 |
| 11 | Massimo Ottobre | Aprilia | +51.563 | 5 |
| 12 | Eskil Suter | Aprilia | +51.613 | 4 |
| 13 | Luca Boscoscuro | Aprilia | +51.617 | 3 |
| 14 | Regis Laconi | Honda | +52.394 | 2 |
| 15 | Jurgen vd Goorbergh | Honda | +52.569 | 1 |
| 16 | Sebastian Porto | Aprilia | +1:03.619 |  |
| 17 | Jamie Robinson | Aprilia | +1:06.917 |  |
| 18 | Olivier Petrucciani | Aprilia | +1:06.945 |  |
| 19 | Alessandro Antonello | Aprilia | +1:07.099 |  |
| 20 | Osamu Miyazaki | Aprilia | +1:32.873 |  |
| 21 | Davide Bulega | Aprilia | +1:32.902 |  |
| 22 | Yasumasa Hatakeyama | Honda | +1:34.039 |  |
| 23 | Franco Battaini | Aprilia | +1:34.363 |  |
| 24 | Sete Gibernau | Honda | +1:34.931 |  |
| 25 | Christian Boudinot | Aprilia | +1:41.263 |  |
| 26 | José Barresi | Yamaha | +1 Lap |  |
| 27 | Roberto Rolfo | Aprilia | +1 Lap |  |
| 28 | Cristophe Cogan | Honda | +1 Lap |  |
| Ret | Gianluigi Scalvini | Honda | Retirement |  |
| Ret | Roberto Locatelli | Aprilia | Retirement |  |
| Ret | Takeshi Tsujimura | Honda | Retirement |  |
Question:
what is the total number of japanese riders in the top 20?
Answer:
3