user: Question: Who was the host team on December 19?
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 "Host Team" FROM "Table" WHERE "Date" = 'December 19';