user: Question: What is the highest Against for a game against Bristol City?
Columns: ['Opposing Team', 'Against', 'Date', 'Venue', 'Round']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Bristol City', 1.0, '31 August 1993', 'Fratton Park , Portsmouth', 'Preliminary Round G4']
SQL:

assistant: SELECT MAX("Against") FROM "Table" WHERE "Opposing Team" = 'Bristol City';