Table: tv_show_episode
Columns: no
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_million

Question: who directed the production code 2t5710?
SQL: SELECT "directed_by" FROM tv_show_episode WHERE "production_code" = '2T5710'

Question: what is the total number o production code where us viewers is 2.76?
SQL: SELECT COUNT("production_code") FROM tv_show_episode WHERE "u_s_viewers_million" = '2.76'

Question: who wrote the no 2?
SQL: SELECT "written_by" FROM tv_show_episode WHERE "no" = 2