user: Question: How many high rebounds took place on December 8?
Columns: ['Game', 'Date', 'Team', 'Score', 'High points', 'High rebounds', 'High assists', 'Location Attendance', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [17.0, 'December 1', 'Milwaukee', 'W 105–94 (OT)', 'Nenê (24)', 'J. R. Smith (10)', 'Chauncey Billups (9)', 'Pepsi Center 14,221', '11–6']
SQL:

assistant: SELECT COUNT("High rebounds") FROM "Table" WHERE "Date" = 'December 8';