user: Question: Who was the away team when the home team scored 18.9 (117)?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Essendon', '18.9 (117)', 'South Melbourne', '13.14 (92)', 'Windy Hill', 16000.0, '8 May 1943']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Home team score" = '18.9 (117)';