user: Question: When the away team scored 18.13 (121), what was the largest crowd size?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['North Melbourne', '9.16 (70)', 'Richmond', '13.17 (95)', 'Arden Street Oval', 22841.0, '25 May 1974']
SQL:

assistant: SELECT MAX("Crowd") FROM "Table" WHERE "Away team score" = '18.13 (121)';