user: Question: What is the english title of the Modern drama, episode 20, that airs on 26 Sep- 21 Oct?
Columns: ['Airing date', 'English title (Chinese title)', 'Number of episodes', 'Genre', 'Official website']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['27 Dec 2004- 29 Jan 2005', 'Shades of Truth 水滸無間道', 25.0, 'Modern action', 'Official website']
SQL:

assistant: SELECT "English title (Chinese title)" FROM "Table" WHERE "Genre" = 'Modern drama' AND "Number of episodes" = 20.0 AND "Airing date" = '26 Sep- 21 Oct';