CREATE TABLE table_28729 ("District" TEXT, "Incumbent" TEXT, "Party" TEXT, "First elected" FLOAT, "Result" TEXT, "Candidates" TEXT)

Who was the incumbent in the Ohio 5 district?
SELECT "Incumbent" FROM table_28729 WHERE "District" = 'Ohio 5'
SELECT "Incumbent" FROM "table_28729" WHERE "District" = 'Ohio 5'