CREATE TABLE "table1_15824796_5" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text
);

Question: Who wrote the episode where the series number is 74?
SQL: SELECT "written_by" FROM "table1_15824796_5" WHERE "series_num"=74;

Question: What is the original airdate when the season number is 4?
SQL: SELECT "original_air_date" FROM "table1_15824796_5" WHERE "season_num"=4;

Question: When the season number is listed as 4 what is the original airdate?
SQL: SELECT "original_air_date" FROM "table1_15824796_5" WHERE "season_num"=4;

Question: What is the airdate when the title is "topsy turvy"?
SQL: SELECT COUNT("original_air_date") FROM "table1_15824796_5" WHERE "title"='\"Topsy Turvy\"';