CREATE TABLE table_28935 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" CLOB, "Result" CLOB, "Candidates" CLOB)

In what district was the incumbent Edwin Gray?
SELECT "District" FROM table_28935 WHERE "Incumbent" = 'Edwin Gray'
SELECT "District" FROM "table_28935" WHERE "Incumbent" = 'Edwin Gray'