Defensive End Pick มีกี่รอบ?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
How many Rounds have a Defensive End Pick?It is not neccessary to use all the tables.
 table_name_16:  (round [ VARCHAR ] position [ VARCHAR) ]
SELECT COUNT(round) FROM table_name_16 WHERE position = "defensive end"