Table: mystery_episodes
Columns: episode
title
directed_by
written_by
originalairdate

Question: What is Written By, when Originalairdate is 25 April 1993?
SQL: SELECT "written_by" FROM mystery_episodes WHERE "originalairdate" = '25 april 1993'

Question: What is Directed By, when Episode # is 7?
SQL: SELECT "directed_by" FROM mystery_episodes WHERE "episode" = 7