Count the number of 'dress' object classes and include their X and Y coordinates in image ID 1764.
dress' object classes refer to OBJ_CLASS = 'dress'; image ID 1764 refers to IMG_ID = 1764; X and Y refer to coordinates of the bounding box;
SELECT T1.X, T1.Y FROM IMG_OBJ AS T1 INNER JOIN OBJ_CLASSES AS T2 ON T1.OBJ_CLASS_ID = T2.OBJ_CLASS_ID WHERE T1.IMG_ID = 1764 AND T2.OBJ_CLASS = 'dress'