CREATE TABLE table_19127 ("Country or territory with flag" CLOB, "Area  ( km\\u00b2 )   ( per sqmi ) " CLOB, "Population  ( July 2009 est. ) " FLOAT, "Population density per km\\u00b2" CLOB, "Capital" CLOB)

What country's capital is buenos aires?
SELECT "Country or territory with flag" FROM table_19127 WHERE "Capital" = 'Buenos Aires'
SELECT "Country or territory with flag" FROM "table_19127" WHERE "Capital" = 'Buenos Aires'