user: Question: What opponent has 2011/12 as the season?
Columns: ['Rank', 'Margin', 'Opponent', 'Venue', 'Season']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', '421 runs', 'New South Wales *', 'Bellerive Oval , Hobart', '2006/07']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Season" = '2011/12';