user: Question: On which date did the away team score 10.11 (71)?
Columns: ['Home team', 'Home team score', 'Away team', 'Away team score', 'Venue', 'Crowd', 'Date']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['Hawthorn', '17.24 (126)', 'South Melbourne', '19.12 (126)', 'Glenferrie Oval', 13536.0, '20 April 1968']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Away team score" = '10.11 (71)';