user: ### NOW ANSWER:
Question: Which Against has a Date of 30/05/1981?
Columns: ['Opposing Team', 'Against', 'Date', 'Venue', 'Status']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['San Isidro Club', 14.0, '16/05/1981', 'Buenos Aires', 'Tour Match']
SQL:

assistant: SELECT COUNT("Against") FROM "Table" WHERE "Date" = '30/05/1981';