CREATE TABLE table_16745 ("Rnd" FLOAT, "Race" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Race Winner" TEXT, "Constructor" TEXT, "Report" TEXT)

what is the race where the pole position is niki lauda and the date is 27 april?
SELECT "Race" FROM table_16745 WHERE "Pole Position" = 'Niki Lauda' AND "Date" = '27 April'
SELECT "Race" FROM "table_16745" WHERE "Date" = '27 April' AND "Pole Position" = 'Niki Lauda'