Table: dwtstars_season10
Columns: episode_number
episode
original_airdate
rating
share
rating_share_18_49
viewers_millions
weekly_rank

Question: What number episode was Week 4, Part 1? 
SQL: SELECT "episode_number" FROM dwtstars_season10 WHERE "episode" = 'Week 4, Part 1'

Question: For what episode was the rating/share for 18-49 at 2.8/8
SQL: SELECT "episode" FROM dwtstars_season10 WHERE "rating_share_18_49" = '2.8/8'

Question: What number episode was Week 4, Part 2?
SQL: SELECT "episode_number" FROM dwtstars_season10 WHERE "episode" = 'Week 4, Part 2'

Question: How many viewers in millions watched the episode with the number 10.18?
SQL: SELECT "viewers_millions" FROM dwtstars_season10 WHERE "episode_number" = '10.18'

Question: What is the rating/share for 18-49 for Week 6, Part 1?
SQL: SELECT "rating_share_18_49" FROM dwtstars_season10 WHERE "episode" = 'Week 6, Part 1'

Question: What is the weekly rank of the episode with a 14 share whose original airdate was April 20, 2010? 
SQL: SELECT "weekly_rank" FROM dwtstars_season10 WHERE "share" = '14' AND "original_airdate" = 'April 20, 2010'