user: Question: On what date did the away team score 13.13 (91) in front of a crowd larger than 15601?
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', '12.16 (88)', 'South Melbourne', '15.15 (105)', 'Kardinia Park', 10973.0, '16 August 1975']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Crowd" > 15601.0 AND "Away team score" = '13.13 (91)';