Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_2508175_1 ( country VARCHAR, annual_co2_emissions__in_thousands_of_metric_tons_ VARCHAR )

### Question ###
when the annual co2 emissions (in thousands of metric tons) is 1811, what is the country?

### Accurate SQL ###

SELECT country FROM table_2508175_1 WHERE annual_co2_emissions__in_thousands_of_metric_tons_ = 1811