user: Question: What was the away team score when Richmond was the home team?
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', '10.11 (71)', 'Melbourne', '6.16 (52)', 'Kardinia Park', 26755.0, '16 July 1955']
SQL:

assistant: SELECT "Away team score" FROM "Table" WHERE "Home team" = 'Richmond';