Table: tv_episodes_13
Columns: no
col
title
directed_by
written_by
canadian_air_date
u_s_air_date
production_code
canadian_viewers_million

Question: Who wrote the episodes watched by 1.816 million people in Canada?
SQL: SELECT "written_by" FROM tv_episodes_13 WHERE "canadian_viewers_million" = '1.816'

Question: Who wrote the episodes watched by 1.575 million people in Canada?
SQL: SELECT "written_by" FROM tv_episodes_13 WHERE "canadian_viewers_million" = '1.575'

Question: Who directed the episode aired on February 27, 2009?
SQL: SELECT "directed_by" FROM tv_episodes_13 WHERE "u_s_air_date" = 'February 27, 2009'

Question: Which episodes had production code 217?
SQL: SELECT "title" FROM tv_episodes_13 WHERE "production_code" = 217