CREATE TABLE table_74643 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine" CLOB, "Driver" CLOB)

What engine is used by Colin Bennett Racing with an 811 chassis?
SELECT "Engine" FROM table_74643 WHERE "Entrant" = 'colin bennett racing' AND "Chassis" = '811'
SELECT "Engine" FROM "table_74643" WHERE "Chassis" = '811' AND "Entrant" = 'colin bennett racing'