Table: tv_episode_data_24
Columns: col
episode
directed_by
written_by
u_s_viewers_in_millions
original_airdate

Question: Who wrote the episode with 7.52 million US viewers?
SQL: SELECT "written_by" FROM tv_episode_data_24 WHERE "u_s_viewers_in_millions" = '7.52'

Question: What are the titles of episodes numbered 19?
SQL: SELECT "episode" FROM tv_episode_data_24 WHERE "col" = 19

Question: Who wrote the episode with 9.81 million US viewers?
SQL: SELECT "written_by" FROM tv_episode_data_24 WHERE "u_s_viewers_in_millions" = '9.81'