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 | City | Population | Definition | Country |
| --- | --- | --- | --- | --- |
| 1.0 | Shanghai | 13831900 | Core districts + inner suburbs | China |
| 2.0 | Seoul | 10456034 | Special City | South Korea |
| 3.0 | Beijing | 10123000 | Core districts + inner suburbs | China |
| 4.0 | Tokyo | 8795000 | 23 special wards area | Japan |
| 5.0 | Jakarta | 8489910 | Special capital district | Indonesia |
| 6.0 | Wuhan | 8001541 (2006-12-31) | Core districts | China |
| 7.0 | Ho Chi Minh City | 7123340 | Province-level municipality | Vietnam |
| 8.0 | Bangkok | 7025000 | Administrative area | Thailand |
| 9.0 | Hong Kong | 7008900 | The entire territory | Hong Kong |
| 10.0 | Guangzhou | 6172839 (2006-12-31) | Core districts | China |
| 11.0 | Tianjin | 5800000 | Core districts + inner suburbs | China |
| 12.0 | Singapore | 4839400 | Country | Singapore |
| 13.0 | Chongqing | 4776027 | Core districts | China |
| 14.0 | Shenyang | 4101197 (2006-12-31) | Core districts | China |
| 15.0 | Yangon | 4088000 | Urban agglomeration | Burma |
| 16.0 | Yokohama | 3670000 | City proper | Japan |
| 17.0 | Busan | 3596076 | Metropolitan City | South Korea |
| 18.0 | Pyongyang | 3255388 | Directly Governed City | North Korea |
Question:
What rank has a population of 4839400?
Answer:
12.0