user: Question: Who was the visiting team on December 17?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Leading scorer', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['December 2', 'Miami', '89–115', 'Denver', 'Dwyane Wade (13)', 16386.0, '4–12']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Date" = 'December 17';