user: Question: What is the highest crowd number for the home team Richmond?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Geelong', '17.13 (115)', 'Melbourne', '20.12 (132)', 'Corio Oval', 16000.0, '23 April 1938']
SQL:

assistant: SELECT MAX("Crowd") FROM "Table" WHERE "Home team" = 'Richmond';