Qual é a superfície do vinhedo (2010) com o grande cru sendo bienvenues-bâtard-montrachet
CREATE TABLE table_13981938_1 (vineyard_surface__2010_ VARCHAR, grand_cru VARCHAR)
SELECT vineyard_surface__2010_ FROM table_13981938_1 WHERE grand_cru = "Bienvenues-Bâtard-Montrachet"