user: Question: How many populations have a capital of Hong Kong?
Columns: ['Country', 'Area km²', 'Population', 'Population density per km²', 'HDI (2011)', 'Capital']
Types: ['text', 'real', 'real', 'real', 'text', 'text']
Sample row: ['China (PRC)', 9640011.0, 1339724852.0, 138.0, '0.699', 'Beijing']
SQL:

assistant: SELECT COUNT("Population") FROM "Table" WHERE "Capital" = 'Hong Kong';