user: Question: Who was the writer when there were 15.85 million US viewers?
Columns: ['Series #', 'Season #', 'Title', 'Directed by', 'Written by', 'Original air date', 'U.S. viewers (millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text']
Sample row: [88.0, 1.0, '" You\'re Gonna Love Tomorrow "', 'Larry Shaw', 'Marc Cherry', 'September28,2008', '18.68']
SQL:

assistant: SELECT "Written by" FROM "Table" WHERE "U.S. viewers (millions)" = '15.85';