user: ### NOW ANSWER:
Question: if the 2.09 million US viewers watched this episode, who was it written by
Columns: ['No.', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. Viewers (in millions)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '"Pilot"', 'Michael Rymer', 'Christopher McQuarrie', 'June7,2010', '4002-08-101', '4.29']
SQL:

assistant: SELECT "Written by" FROM "Table" WHERE "U.S. Viewers (in millions)" = '2.09';