Table: episodes_29
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_millions

Question: Who wrote the episode that is production code 202?
SQL: SELECT "written_by" FROM episodes_29 WHERE "production_code" = '202'

Question: How many millions of US viewers watched "Helen Back Again"?
SQL: SELECT "u_s_viewers_millions" FROM episodes_29 WHERE "title" = '"Helen Back Again"'

Question: What title was watched by 3.8 million US viewers?
SQL: SELECT "title" FROM episodes_29 WHERE "u_s_viewers_millions" = '3.8'

Question: What is the original air date of "Helen Back Again"?
SQL: SELECT "original_air_date" FROM episodes_29 WHERE "title" = '"Helen Back Again"'

Question: What season number in the season has production code 210?
SQL: SELECT MIN("no_in_season") FROM episodes_29 WHERE "production_code" = '210'