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:
| Rank | Name | Nationality | Result | Notes |
| --- | --- | --- | --- | --- |
|  | Park Ho-Hyun | South Korea | 55.58 | PB |
|  | Lee Young-Sun | South Korea | 55.29 |  |
|  | Anne De Silva | Sri Lanka | 54.86 |  |
| 4 | Liliya Dusmetova | Uzbekistan | 54.52 | SB |
| 5 | Zhang Li | China | 54.11 |  |
| 6 | Harumi Yamamoto | Japan | 52.60 |  |
| 7 | Suman Devi | India | 52.58 |  |
| 8 | Emika Yoshida | Japan | 51.62 |  |
| 9 | Nadeeka Lakmali | Sri Lanka | 48.54 |  |
| 10 | Jang Ok-Ju | North Korea | 41.68 | PB |
| 11 | Parveen Akhtar | Pakistan | 37.51 |  |
Question:
how many competitors were from north and south korea combined?
Answer:
3