ทีมไหนมี Steinar Kaldal กองหลัง/กองหน้า?ไม่จำเป็นต้องใช้ทุกโต๊ะ
What team has Steinar Kaldal, a guard / forward?It is not neccessary to use all the tables.
 table_name_57:  team [ VARCHAR]  position [ VARCHAR]  player [ VARCHAR] 
SELECT team FROM table_name_57 WHERE position = "guard / forward" AND player = "steinar kaldal"