CREATE TABLE table_56881 ("Race" TEXT, "Circuit" TEXT, "Date" TEXT, "Pole position" TEXT, "Fastest lap" TEXT, "Winning driver" TEXT, "Constructor" TEXT, "Tyre" TEXT, "Report" TEXT)

Name the winning driver for belgian grand prix
SELECT "Winning driver" FROM table_56881 WHERE "Race" = 'belgian grand prix'
SELECT "Winning driver" FROM "table_56881" WHERE "Race" = 'belgian grand prix'