user: Question: What did the away team score when the home team scored 9.18 (72)?
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', '12.18 (90)', 'North Melbourne', '8.15 (63)', 'MCG', 15486.0, '30 July 1955']
SQL:

assistant: SELECT "Away team score" FROM "Table" WHERE "Home team score" = '9.18 (72)';