CREATE TABLE table_27741 ("Rd." CLOB, "Event" CLOB, "Circuit" CLOB, "City / State" CLOB, "Date" CLOB, "Championship" CLOB, "Challenge" CLOB, "Production" CLOB)

What circuit was the Clipsal 500 on?
SELECT "Circuit" FROM table_27741 WHERE "Event" = 'Clipsal 500'
SELECT "Circuit" FROM "table_27741" WHERE "Event" = 'Clipsal 500'