user: ### NOW ANSWER:
Question: What's the airing date of Armed Reaction 陀槍師姐 with 20 episodes in the Modern action genre having an Official website?
Columns: ['Airing date', 'English title (Chinese title)', 'Number of episodes', 'Genre', 'Official website']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['19 Jan- 13 Feb', 'A Measure of Love 緣來沒法擋', 20.0, 'Modern drama', 'Official website']
SQL:

assistant: SELECT "Airing date" FROM "Table" WHERE "Official website" = 'Official website' AND "Number of episodes" = 20.0 AND "Genre" = 'Modern action' AND "English title (Chinese title)" = 'Armed Reaction 陀槍師姐';