user: Question: when the annual co2 emissions (in thousands of metric tons) is 1811, what is the country?
Columns: ['Country', 'Annual CO2 emissions (in thousands of metric tons)', 'GDP (current, in billions of US dollars)', 'GDP per Emissions (in US dollars per ton)', 'GDP (PPP, in billions of current international dollars)', 'PPP GDP per Emissions (in international dollars per ton)']
Types: ['text', 'real', 'text', 'real', 'text', 'real']
Sample row: ['Chad', 396.0, '6.31', 15924.0, '15.40', 38881.0]
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Annual CO2 emissions (in thousands of metric tons)" = 1811.0;