Table: episode_data_12
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code

Question: What episode number in the series was directed by Winrich Kolbe?
SQL: SELECT MIN("no_in_series") FROM episode_data_12 WHERE "directed_by" = 'Winrich Kolbe'

Question: What episode number in the season is "many happy returns"?
SQL: SELECT MAX("no_in_season") FROM episode_data_12 WHERE "title" = '"Many Happy Returns"'

Question: How many episodes in the season were named "knight sting"?
SQL: SELECT COUNT("no_in_season") FROM episode_data_12 WHERE "title" = '"Knight Sting"'