Table: episode_data_47
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code

Question: What is the name of episode 5 in the season?
SQL: SELECT "title" FROM episode_data_47 WHERE "no_in_season" = 5

Question: Who wrote "it's only rock and roll"?
SQL: SELECT "written_by" FROM episode_data_47 WHERE "title" = '"It''s Only Rock and Roll"'

Question: What is the title of episode 155 in the series?
SQL: SELECT "title" FROM episode_data_47 WHERE "no_in_series" = 155