CREATE TABLE table_3713 ("Episode #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Originalairdate" TEXT, "Ratings" TEXT)

Name who directed the air date of 12 july 2010
SELECT "Directed by" FROM table_3713 WHERE "Originalairdate" = '12 July 2010'
SELECT "Directed by" FROM "table_3713" WHERE "Originalairdate" = '12 July 2010'