CREATE TABLE table_31183 ("No." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Featured character ( s ) " TEXT, "U.S. viewers  ( millions ) " TEXT, "Original air date" TEXT)

How many people directed episode 2?
SELECT COUNT("Directed by") FROM table_31183 WHERE "No." = '2'
SELECT COUNT("Directed by") FROM "table_31183" WHERE "No." = '2'