user: Question: how many millions of north american viewers had the episode called "Smother"? 
Columns: ['No.', 'Title', 'Directed by', 'Written by', 'U.S. viewers (million)', 'Original air date', 'Production code']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, '"Two of a Kind"', 'John Terlesky', 'Rob Fresco', '13.06', 'February16,2011', 107.0]
SQL:

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