user: Question: What was the date of game 21?
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 2', 'L.A. Clippers', 'W 100–98 (OT)', 'Dirk Nowitzki (29)', 'Dirk Nowitzki (10)', 'Jason Kidd (8)', 'American Airlines Center 19,670', '9–8']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Game" = 21.0;