CREATE TABLE table_72110 ("Rd" FLOAT, "Name" TEXT, "Pole Position" TEXT, "Fastest Lap" TEXT, "Winning driver" TEXT, "Winning team" TEXT, "Report" TEXT)

Which Rd took place at the Indianapolis 500?
SELECT "Rd" FROM table_72110 WHERE "Name" = 'Indianapolis 500'
SELECT "Rd" FROM "table_72110" WHERE "Name" = 'Indianapolis 500'