CREATE TABLE table_18380 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

Which district elected incumbent Earle Cabell?
SELECT "District" FROM table_18380 WHERE "Incumbent" = 'Earle Cabell'
SELECT "District" FROM "table_18380" WHERE "Incumbent" = 'Earle Cabell'