Table: treme_episodes
Columns: no
col
title
directed_by
story_by
teleplay_by
original_air_date
u_s_viewers_millions

Question: Who directed the episode that had 0.54 million U.S. viewers? 
SQL: SELECT "directed_by" FROM treme_episodes WHERE "u_s_viewers_millions" = '0.54'

Question: Who wrote the teleplay for the episode directed by Tim Robbins? 
SQL: SELECT "teleplay_by" FROM treme_episodes WHERE "directed_by" = 'Tim Robbins'

Question: Who directed the episode that had 0.57 million U.S. viewers? 
SQL: SELECT "directed_by" FROM treme_episodes WHERE "u_s_viewers_millions" = '0.57'

Question: What number episode in the season was watched by 0.49 million U.S. viewers? 
SQL: SELECT MAX("col") FROM treme_episodes WHERE "u_s_viewers_millions" = '0.49'