user: Question: What was the smallest crowd size for a home game for 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: ['Richmond', '14.13 (97)', 'St Kilda', '10.11 (71)', 'Punt Road Oval', 28000.0, '17 June 1950']
SQL:

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