CREATE TABLE table_57239 ("Round" FLOAT, "Grand Prix" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning Driver" TEXT, "Winning Constructor" TEXT, "Report" TEXT)

What is the pole position of the grand prix with 1 round?
SELECT "Pole Position" FROM table_57239 WHERE "Round" = '1'
SELECT "Pole Position" FROM "table_57239" WHERE "Round" = '1'