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:
| Country | Area km² | Population | Population density per km² | HDI (2011) | Capital |
| --- | --- | --- | --- | --- | --- |
| China (PRC) | 9640011.0 | 1339724852.0 | 138.0 | 0.699 | Beijing |
| Hong Kong (PRC) | 1104.0 | 7061200.0 | 6390.0 | 0.898 | Hong Kong |
| Japan | 377930.0 | 127950000.0 | 337.0 | 0.901 | Tokyo |
| Macau (PRC) | 30.0 | 556800.0 | 18662.0 | No Data | Macau |
| Mongolia | 1564100.0 | 2809600.0 | 2.0 | 0.653 | Ulaanbaatar |
| North Korea | 120538.0 | 24346000.0 | 198.0 | No Data | Pyongyang |
| South Korea | 100210.0 | 48988833.0 | 500.0 | 0.897 | Seoul |
Question:
How many populations have a capital of Hong Kong?
Answer:
1.0