Table: central_asian_union_countries
Columns: country
population
area_km
gdp_nominal
gdp_per_capita_nominal

Question: What is the gpa per capita (nominal) for the country with gdp (nominal) is $52.0 billion?
SQL: SELECT "gdp_per_capita_nominal" FROM central_asian_union_countries WHERE "gdp_nominal" = '$52.0 billion'

Question: How many countries has a gdp (nominal) of $29.9 billion?
SQL: SELECT COUNT("gdp_per_capita_nominal") FROM central_asian_union_countries WHERE "gdp_nominal" = '$29.9 billion'

Question: What is the GDP (nominal) for Uzbekistan?
SQL: SELECT "gdp_nominal" FROM central_asian_union_countries WHERE "country" = 'Uzbekistan'

Question: What is the area (km²) for the country with a population of 16967000?
SQL: SELECT MIN("area_km") FROM central_asian_union_countries WHERE "population" = 16967000