user: Question: What's the lowest against on 27/03/1971?
Columns: ['Opposing Teams', 'Against', 'Date', 'Venue', 'Status']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Wales', 3.0, '16/01/1971', 'Cardiff Arms Park , Cardiff', 'Five Nations']
SQL:

assistant: SELECT MIN("Against") FROM "Table" WHERE "Date" = '27/03/1971';