CREATE TABLE table_49528 ("Year" TEXT, "Designated Grand Prix" TEXT, "Track" TEXT, "250 cc" TEXT, "350 cc" TEXT, "500 cc" TEXT, "Report" TEXT)

Who won the 350cc at Sachsenring?
SELECT "350 cc" FROM table_49528 WHERE "Track" = 'sachsenring'
SELECT "350 cc" FROM "table_49528" WHERE "Track" = 'sachsenring'