user: Question: How many people are listed for high rebounds on game 30?
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: [18.0, 'December 1', 'Charlotte', 'W 89–73 (OT)', 'David West (22)', 'Emeka Okafor (13)', 'Chris Paul (14)', 'New Orleans Arena 10,866', '13–5']
SQL:

assistant: SELECT COUNT("High rebounds") FROM "Table" WHERE "Game" = 30.0;