Sarah Pia Anderson กำกับกี่ตอน?ไม่จำเป็นต้องใช้ตารางทั้งหมด
How many episodes were directed by Sarah Pia Anderson?It is not neccessary to use all the tables.
 table_23287683_1:  (title [ VARCHAR ] directed_by [ VARCHAR) ]
SELECT COUNT(title) FROM table_23287683_1 WHERE directed_by = "Sarah Pia Anderson"