user: Question: What was the GDP (in millions USD) of Hong Kong in 2009?
Columns: ['Country / territory', 'Area (km²)', 'Population', 'Pop. density (/km²)', 'GDP millions of USD (2009)', 'GDP per capita USD (2009-2011)', 'Capital']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: ['American Samoa', 199.0, 55519.0, 326.0, 537.0, 7874.0, 'Pago Pago']
SQL:

assistant: SELECT "GDP millions of USD (2009)" FROM "Table" WHERE "Country / territory" = 'Hong Kong';