user: Question: How many millions of U.S viewers watched the episode titled "Miss Mystic Falls"?
Columns: ['No. in series', 'Title', 'Directed by', 'Written by', 'Original air date', 'Production code', 'U.S. viewers (million)']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, '" Pilot "', 'Marcos Siega', 'Teleplay by: Kevin Williamson & Julie Plec', 'September10,2009', '296766', '4.91']
SQL:

assistant: SELECT "U.S. viewers (million)" FROM "Table" WHERE "Title" = '"Miss Mystic Falls"';