CREATE TABLE table_18422 ("District" CLOB, "Incumbent" CLOB, "Party" CLOB, "First elected" FLOAT, "Result" CLOB, "Candidates" CLOB)

What district is incumbent frank chelf from?
SELECT "District" FROM table_18422 WHERE "Incumbent" = 'Frank Chelf'
SELECT "District" FROM "table_18422" WHERE "Incumbent" = 'Frank Chelf'