user: Question: What is the date of the 42 Against?
Columns: ['Opposing Teams', 'Against', 'Date', 'Venue', 'Status']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Wales', 26.0, '02/02/2008', 'Twickenham , London', 'Six Nations']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Against" = 42.0;