Table: tv_episode_data_43
Columns: no_in_series
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_million

Question: How many millions of U.S viewers watched the episode titled "Miss Mystic Falls"?
SQL: SELECT "u_s_viewers_million" FROM tv_episode_data_43 WHERE "title" = '"Miss Mystic Falls"'

Question: What is the production code of the episode that was watched by 3.81 million U.S. viewers? 
SQL: SELECT "production_code" FROM tv_episode_data_43 WHERE "u_s_viewers_million" = '3.81'

Question: Who wrote the episode titled "There Goes the Neighborhood"? 
SQL: SELECT "written_by" FROM tv_episode_data_43 WHERE "title" = '"There Goes the Neighborhood"'