user: Question: What is the date with Geelong as 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: ['Hawthorn', '10.18 (78)', 'South Melbourne', '12.6 (78)', 'Glenferrie Oval', 12500.0, '28 July 1956']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Away team" = 'Geelong';