Dave Treen ให้บริการในเขตใด?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
What district did Dave Treen serve?It is not neccessary to use all the tables.
 table_1341663_19:  (district [ VARCHAR ] incumbent [ VARCHAR) ]
SELECT district FROM table_1341663_19 WHERE incumbent = "Dave Treen"