What's the season number of the episode directed by Dan Attias? 
CREATE TABLE "table1_13755296_1" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "story_by" text,
  "teleplay_by" text,
  "directed_by" text,
  "original_air_date" text
);
SELECT MIN("season_num") FROM "table1_13755296_1" WHERE "directed_by"='Dan Attias';