user: Question: How many touchdowns were there with QB rating of 66.6?
Columns: ['Name', 'Completions', 'Attempts', 'Completion %', 'Yards', 'Touchdowns', 'Interceptions', 'QB Rating']
Types: ['text', 'real', 'real', 'text', 'real', 'real', 'real', 'text']
Sample row: ['Charley Johnson', 1030.0, 2047.0, '50.3%', 14928.0, 108.0, 110.0, '69.6']
SQL:

assistant: SELECT SUM("Touchdowns") FROM "Table" WHERE "QB Rating" = '66.6';