user: Question: What was the lowest crowd seen at a game that Richmond was the Away team in?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Melbourne', '19.8 (122)', 'Richmond', '12.17 (89)', 'MCG', 28628.0, '29 May 1926']
SQL:

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