CREATE TABLE table_16666 ("Round" FLOAT, "Grand Prix" TEXT, "Date" TEXT, "Location" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning Driver" TEXT, "Winning Constructor" TEXT, "Report" TEXT)

What is the number of pole position with a round of 15?
SELECT COUNT("Pole Position") FROM table_16666 WHERE "Round" = '15'
SELECT COUNT("Pole Position") FROM "table_16666" WHERE "Round" = '15'