Table: gunsmoke_episodes_9
Columns: series
season
title
director
writer_s
airdate

Question: Who was the writer of episode 15?
SQL: SELECT "writer_s" FROM gunsmoke_episodes_9 WHERE "season" = 15

Question: What is the title of #33?
SQL: SELECT "title" FROM gunsmoke_episodes_9 WHERE "season" = 33

Question: How many directors worked on #158?
SQL: SELECT COUNT("director") FROM gunsmoke_episodes_9 WHERE "series" = 158