user: Question: What's the maximum crowd when SCG is the ground?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Ground', 'Crowd', 'Date', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Melbourne', '5.11 (41)', 'Geelong', '24.13 (157)', 'MCG', 34610.0, 'Friday, 8 August', 'AFL.com.au']
SQL:

assistant: SELECT MAX("Crowd") FROM "Table" WHERE "Ground" = 'SCG';