Table: tv_episode_data_10
Columns: series
season
title
directed_by
written_by
original_air_date

Question: Who wrote the episode where the series number is 74?
SQL: SELECT "written_by" FROM tv_episode_data_10 WHERE "series" = 74

Question: What is the original airdate when the season number is 4?
SQL: SELECT "original_air_date" FROM tv_episode_data_10 WHERE "season" = 4

Question: When the season number is listed as 4 what is the original airdate?
SQL: SELECT "original_air_date" FROM tv_episode_data_10 WHERE "season" = 4

Question: What is the airdate when the title is "topsy turvy"?
SQL: SELECT COUNT("original_air_date") FROM tv_episode_data_10 WHERE "title" = '"Topsy Turvy"'