CREATE TABLE table_16730 ("Rnd" FLOAT, "Race" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Race Winner" TEXT, "Constructor" TEXT, "Report" TEXT)

How many races had the pole position Alain Prost and the race winner Keke Rosberg?
SELECT COUNT("Race") FROM table_16730 WHERE "Pole Position" = 'Alain Prost' AND "Race Winner" = 'Keke Rosberg'
SELECT COUNT("Race") FROM "table_16730" WHERE "Pole Position" = 'Alain Prost' AND "Race Winner" = 'Keke Rosberg'