CREATE TABLE table_22170495_7 (scripted_show_ranking INT, title VARCHAR)

The episode titled 'Epiphany' received what scripted show ranking?
SELECT MIN(scripted_show_ranking) FROM table_22170495_7 WHERE title = "Epiphany"
SELECT MIN("scripted_show_ranking") FROM "table_22170495_7" WHERE "Epiphany" = "title"