user: Question: WHo was tHe opponent on 11 August 1991 wHen tHe H/A was H?
Columns: ['Date', 'Opponents', 'H / A', 'Result F – A', 'Scorers']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['24 July 1991', 'Mazda', 'H', '1 – 2', 'Ferguson']
SQL:

assistant: SELECT "Opponents" FROM "Table" WHERE "H / A" = 'H' AND "Date" = '11 August 1991';