CREATE TABLE table_8793 ("Rank" FLOAT, "City" CLOB, "Population" FLOAT, "Country" CLOB, "Area  ( km\\u00b2 ) " FLOAT)

What is Busan's rank?
SELECT SUM("Rank") FROM table_8793 WHERE "City" = 'busan'
SELECT SUM("Rank") FROM "table_8793" WHERE "City" = 'busan'