user: Question: Where was the game on September 12 played when the Dallas Cowboys was the visiting team?
Columns: ['Date', 'Visiting Team', 'Final Score', 'Host Team', 'Stadium']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['September 9', 'Minnesota Vikings', '9-14', 'New Orleans Saints', 'Louisiana Superdome']
SQL:

assistant: SELECT "Stadium" FROM "Table" WHERE "Visiting Team" = 'Dallas Cowboys' AND "Date" = 'September 12';