Robert W. Edgar ดำรงตำแหน่งในเขตใด?ไม่จำเป็นต้องใช้ตารางทั้งหมด
In which district is Robert W. Edgar the incumbent?It is not neccessary to use all the tables.
 table_1341598_39:  (district [ VARCHAR ] incumbent [ VARCHAR) ]
SELECT district FROM table_1341598_39 WHERE incumbent = "Robert W. Edgar"