user: Question: When the away team has a total score of 13.9 (87), what is the name of the away 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: ['Footscray', '13.19 (97)', 'Richmond', '6.5 (41)', 'Western Oval', 12537.0, '11 August 1979']
SQL:

assistant: SELECT "Away team" FROM "Table" WHERE "Away team score" = '13.9 (87)';