sentences:  On the Left Bank, the Bordeaux Wine Official Classification of 1855 is the starting point for classification.Although this purports to be a classification of all Bordeaux wine, it in fact exclusively lists red wine producers from the Haut-Médoc plus Château Haut-Brion of Graves, and (in a separate list) sweet white wine producers from Sauternes (including Barsac).Estates in the Médoc which were not classified in that listing may be classified under the Cru Bourgeois label.