user: Question: how many total number of points margin when Brive is the winners
Columns: ['Winners', 'Match points', 'Aggregate score', 'Points margin', 'Losers']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Bath', '4 – 0', '125 – 11', 114.0, "L'Aquila"]
SQL:

assistant: SELECT SUM("Points margin") FROM "Table" WHERE "Winners" = 'Brive';