CREATE TABLE table_70388 ("Year" FLOAT, "Entrant" TEXT, "Class" TEXT, "Chassis" TEXT, "Engine" TEXT, "Tyres" TEXT, "Rank" TEXT, "Points" FLOAT)

What is the engine for the bmw motorsport entrant with 123 points before 2004?
SELECT "Engine" FROM table_70388 WHERE "Year" < '2004' AND "Entrant" = 'bmw motorsport' AND "Points" = '123'
SELECT "Engine" FROM "table_70388" WHERE "Entrant" = 'bmw motorsport' AND "Points" = '123' AND "Year" < '2004'