CREATE TABLE table_19076 ("Rd." FLOAT, "Race Title" TEXT, "Circuit" TEXT, "City / State" TEXT, "Date" TEXT, "Winner" TEXT, "Team" TEXT, "Report" TEXT)

On what circuit was the City of Ipswich 400 race held?
SELECT "Circuit" FROM table_19076 WHERE "Race Title" = 'City of Ipswich 400'
SELECT "Circuit" FROM "table_19076" WHERE "Race Title" = 'City of Ipswich 400'