What is the shipping address for the sales order "43873"?
shipping address = AddressLine1+AddressLine2+City;
SELECT T1.ShipToAddressID FROM SalesOrderHeader AS T1 INNER JOIN Address AS T2 ON T1.BillToAddressID = T2.AddressID WHERE T1.SalesOrderID = 43873 GROUP BY T1.ShipToAddressID