What is the Original airdate of the episode after Season 6 Directed by Erik Wiese?
CREATE TABLE "season_2_2009_11" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_airdate" text
);
SELECT "original_airdate" FROM "season_2_2009_11" WHERE "directed_by"='erik wiese' AND "season_num">6;