Bobby Bell และ Bill Lee เขียนตอนใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
What episode was written by Bobby Bell and Bill Lee?It is not neccessary to use all the tables.
 table_12226390_4:  (no_in_season [ INTEGER ] written_by [ VARCHAR) ]
SELECT MAX(no_in_season) FROM table_12226390_4 WHERE written_by = "Bobby Bell and Bill Lee"