Table: tv_episode_data_22
Columns: series_no
season_no
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_millions

Question: at most what number in the series was the episode "chet episode"?
SQL: SELECT MAX("series_no") FROM tv_episode_data_22 WHERE "title" = '"Chet Episode"'

Question: the episode entitled "ward 8" was what number in the series?
SQL: SELECT "series_no" FROM tv_episode_data_22 WHERE "title" = '"Ward 8"'

Question: who directed the episode entitled "home is where the hospital is"?
SQL: SELECT "directed_by" FROM tv_episode_data_22 WHERE "title" = '"Home Is Where the Hospital Is"'