Table: countries_info
Columns: country_or_territory_with_flag
area_km_per_sqmi
population_july_2009_est
population_density_per_km
capital

Question: What country's capital is buenos aires?
SQL: SELECT "country_or_territory_with_flag" FROM countries_info WHERE "capital" = 'Buenos Aires'

Question: What unit of measurement for uruguay?
SQL: SELECT "area_km_per_sqmi" FROM countries_info WHERE "country_or_territory_with_flag" = 'Uruguay'

Question: What country'c capital is santiago?
SQL: SELECT "country_or_territory_with_flag" FROM countries_info WHERE "capital" = 'Santiago'