What is the GDP (billion US$) of the country that has an Area (km²) of 316?
CREATE TABLE table_name_76 (gdp__billion_us$_ VARCHAR, area__km²_ VARCHAR)
SELECT gdp__billion_us$_ FROM table_name_76 WHERE area__km²_ = "316"
### Context: CREATE TABLE table_name_76 (gdp__billion_us$_ VARCHAR, area__km²_ VARCHAR) ### Question: What is the GDP (billion US$) of the country that has an Area (km²) of 316? ### Answer: SELECT gdp__billion_us$_ FROM table_name_76 WHERE area__km²_ = "316"