เอ็ดวิน เกรย์ดำรงตำแหน่งในเขตใด?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
In what district was the incumbent Edwin Gray?It is not neccessary to use all the tables.
 table_28935:  "District" [ text]  "Incumbent" [ text]  "Party" [ text]  "Result" [ text]  "Candidates" [ text] 
SELECT "District" FROM table_28935 WHERE "Incumbent" = 'Edwin Gray'