CREATE TABLE table_54503 ("Tournament" CLOB, "Date" CLOB, "City" CLOB, "Country" CLOB, "Surface" CLOB, "Singles champions" CLOB)

On what Surface will the Venezuela F5 Futures in Caracas be played?
SELECT "Surface" FROM table_54503 WHERE "City" = 'caracas' AND "Tournament" = 'venezuela f5 futures'
SELECT "Surface" FROM "table_54503" WHERE "City" = 'caracas' AND "Tournament" = 'venezuela f5 futures'