user: Question: Who had the highest rebounds of the game with A. Johnson (6) as the highest assist?
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: [16.0, 'December 3', '@ Philadelphia', 'W 88–79', 'J. Smtih (22)', 'A. Horford (13)', 'J. Johnson (7)', 'Wachovia Center 11,465', '7–9']
SQL:

assistant: SELECT "High rebounds" FROM "Table" WHERE "High assists" = 'A. Johnson (6)';