user: Question: On which date was the game where the home teams score was 22.15 (147), and the away teams score was 9.8 (62)
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', '11.17 (83)', 'North Melbourne', '9.10 (64)', 'Kardinia Park', 19133.0, '15 June 1970']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Home team score" = '22.15 (147)' AND "Away team score" = '9.8 (62)';